This document discusses database security and integrity. It covers aspects of security like access control through privileges and views. It also discusses integrity constraints that ensure only valid data is entered, including domain checks, attribute constraints, and relationship constraints within and between tables. Maintaining both security and integrity is important to control authorized access and ensure accurate data.
Inheritance allows a derived class to inherit properties from a base or parent class. A derived class inherits attributes and behaviors of the base class and can add its own attributes and behaviors. There are different types of inheritance including single, multilevel, multiple, hierarchical, and hybrid inheritance. Inheritance promotes code reuse and reduces development time.
The document describes the Model-View-Controller (MVC) software architectural pattern. MVC separates an application into three main components: the model, the view, and the controller. The model manages the application's data and business logic. The view displays the model's information. The controller interprets inputs from the user and updates the model and/or view accordingly. This separation of concerns makes the application modular, reusable, and maintainable.
The document discusses the architecture of Java, which combines compilation and interpretation. It describes how Java code is first compiled into bytecode, then executed by the Java Virtual Machine (JVM), which interprets the bytecode and compiles it into machine code to be executed by the operating system. The main components of the Java architecture are the JVM, JRE, and JDK. The JVM provides an environment to execute Java programs and interprets bytecode into machine code so that Java programs can run on any system.
The document provides an overview of database systems, including their purpose, components, and architecture. It describes how database systems offer solutions to problems with using file systems to store data by providing data independence, concurrency control, recovery from failures, and more. It also defines key concepts like data models, data definition and manipulation languages, transactions, storage management, database users, administrators, and the roles they play in overall database system structure.
The Relational Data Model and Relational Database Constraints Ch5 (Navathe 4t...Raj vardhan
The Relational Data Model and Relational Database Constraints
Ch5 (Navathe 4th edition)/ Ch7 (Navathe 3rd edition)
Example of STUDENT Relation(figure 5.1)
The document discusses Java AWT and Swing GUI programming. It provides details on commonly used AWT and Swing components like Frame, Button, Label, Textfield. It explains the hierarchy and differences between AWT and Swing. Examples are provided to demonstrate creating a simple GUI using various components like Buttons, Labels and adding them to a Frame. The document also covers other Swing components like Checkboxes, Scrollpanes and containers like Frame, Dialog, Panel.
The document discusses the XML DOM (Document Object Model). It defines the DOM as a standard for accessing and manipulating XML documents through a tree structure representation. The DOM defines all elements in an XML document as nodes that can be traversed and modified. It outlines DOM properties and methods for navigating and manipulating the node tree. Advantages of the DOM include its traversable and modifiable tree structure, while disadvantages include higher resource usage compared to SAX parsing.
MVC (Model-View-Controller) is a software architectural pattern that divides an application into three interconnected parts: the model, the view, and the controller. The model manages the application's data logic and rules. The view displays the data from the model. The controller links the model and view by obtaining input and converting it to commands for the model or preferred views for the user.
Inheritance allows a derived class to inherit properties from a base or parent class. A derived class inherits attributes and behaviors of the base class and can add its own attributes and behaviors. There are different types of inheritance including single, multilevel, multiple, hierarchical, and hybrid inheritance. Inheritance promotes code reuse and reduces development time.
The document describes the Model-View-Controller (MVC) software architectural pattern. MVC separates an application into three main components: the model, the view, and the controller. The model manages the application's data and business logic. The view displays the model's information. The controller interprets inputs from the user and updates the model and/or view accordingly. This separation of concerns makes the application modular, reusable, and maintainable.
The document discusses the architecture of Java, which combines compilation and interpretation. It describes how Java code is first compiled into bytecode, then executed by the Java Virtual Machine (JVM), which interprets the bytecode and compiles it into machine code to be executed by the operating system. The main components of the Java architecture are the JVM, JRE, and JDK. The JVM provides an environment to execute Java programs and interprets bytecode into machine code so that Java programs can run on any system.
The document provides an overview of database systems, including their purpose, components, and architecture. It describes how database systems offer solutions to problems with using file systems to store data by providing data independence, concurrency control, recovery from failures, and more. It also defines key concepts like data models, data definition and manipulation languages, transactions, storage management, database users, administrators, and the roles they play in overall database system structure.
The Relational Data Model and Relational Database Constraints Ch5 (Navathe 4t...Raj vardhan
The Relational Data Model and Relational Database Constraints
Ch5 (Navathe 4th edition)/ Ch7 (Navathe 3rd edition)
Example of STUDENT Relation(figure 5.1)
The document discusses Java AWT and Swing GUI programming. It provides details on commonly used AWT and Swing components like Frame, Button, Label, Textfield. It explains the hierarchy and differences between AWT and Swing. Examples are provided to demonstrate creating a simple GUI using various components like Buttons, Labels and adding them to a Frame. The document also covers other Swing components like Checkboxes, Scrollpanes and containers like Frame, Dialog, Panel.
The document discusses the XML DOM (Document Object Model). It defines the DOM as a standard for accessing and manipulating XML documents through a tree structure representation. The DOM defines all elements in an XML document as nodes that can be traversed and modified. It outlines DOM properties and methods for navigating and manipulating the node tree. Advantages of the DOM include its traversable and modifiable tree structure, while disadvantages include higher resource usage compared to SAX parsing.
MVC (Model-View-Controller) is a software architectural pattern that divides an application into three interconnected parts: the model, the view, and the controller. The model manages the application's data logic and rules. The view displays the data from the model. The controller links the model and view by obtaining input and converting it to commands for the model or preferred views for the user.
The document provides information on entity relationship diagrams (ERDs), including the objectives, components, and steps to create an ERD. It defines key ERD concepts like entities, attributes, relationships, and cardinality. It describes the entity modeling process and discusses how to recognize entities, attributes, relationships, and cardinalities in a database. It outlines the general steps to create an ERD, including identifying entities, finding relationships between entities, drawing a rough ERD, defining primary keys, identifying attributes, mapping attributes to entities, and drawing a fully attributed ERD. Sample ERDs are provided to illustrate concepts like cardinality constraints.
This document discusses deadlocks in operating systems. It defines a deadlock as when a set of processes are blocked because each process is holding a resource and waiting for another resource held by another process. Four conditions must be met simultaneously for a deadlock to occur: mutual exclusion, hold and wait, no preemption, and circular wait. An example of a deadlock between two processes, Process 1 and Process 2, is provided. Methods for handling deadlocks include prevention/avoidance, detection and recovery, and ignoring the problem. Prevention negates one of the necessary conditions, while avoidance uses strategies like Banker's algorithm to ensure deadlocks are avoided.
Sequence diagrams show the interactions between objects over time by depicting object lifelines and messages exchanged. They emphasize the time ordering of messages. To create a sequence diagram, identify participating objects and messages, lay out object lifelines across the top, and draw messages between lifelines from top to bottom based on timing. Activation boxes on lifelines indicate when objects are active. Sequence diagrams help document and understand the logical flow of a system.
The document discusses first normal form (1NF) in databases. 1NF requires that each attribute contain atomic (non-divisible) values, and disallows composite attributes or attributes with multiple values. The example database violates 1NF by having a location attribute with composite values. There are three proposed solutions: 1) split the relation into two tables, 2) expand the key to separate tuples for each location, or 3) introduce additional attributes to store each location value separately.
This document discusses ADO.NET, which is a data access technology that allows applications to connect to and manipulate data from various sources. It describes the core ADO.NET objects like Connection, Command, DataReader, DataAdapter, DataSet and DataTable. It also explains the differences between connected and disconnected data access models in ADO.NET, detailing the objects used in each approach and their advantages. Finally, it provides an overview of commonly used .NET data providers like SqlClient, OleDb and Odbc.
Java applications cannot directly communicate with a database to submit data and retrieve the results of queries.
This is because a database can interpret only SQL statements and not Java language statements.
For this reason, you need a mechanism to translate Java statements into SQL statements.
The JDBC architecture provides the mechanism for this kind of translation.
The JDBC architecture can be classified into two layers :
JDBC application layer.
JDBC driver layer.
JDBC application layer : Signifies a Java application that uses the JDBC API to interact with the JDBC drivers. A JDBC driver is software that a Java application uses to access a database. The JDBC driver manager of JDBC API connects the Java application to the driver.
JDBC driver layer : Acts as an interface between a Java applications and a database. This layer contains a driver , such as a SQL server driver or an Oracle driver , which enables connectivity to a database.
A driver sends the request of a Java application to the database. After processing the request, the database sends the response back to the driver. The driver translates and sends the response to the JDBC API. The JDBC API forwards it to the Java application.
This document discusses several key design issues that occur across multiple layers in computer networks, including addressing, error control, flow control, multiplexing, and routing. Addressing refers to the need for each layer to identify senders and receivers. Error control handles imperfect physical circuits using error detection and correction codes agreed upon by both ends. Flow control deals with assembling and reassembling messages as they are transmitted. Routing selects a path when multiple options exist between source and destination. Multiplexing and demultiplexing improve network systems by combining and separating multiple communication signals.
The document provides a tutorial on PHP programming. It discusses what PHP is, how to install PHP, basic PHP syntax like variables and data types, and how to use PHP with HTML. It also covers PHP programming concepts like strings, operators, conditional statements, arrays, and more. The tutorial aims to teach the fundamentals of PHP to help readers get started with learning PHP.
Super keyword is a reference variable that is used for refer parent class object. Super keyword is used in java at three level, at variable level, at method level and at constructor level.
This document discusses polymorphism in object-oriented programming. It defines polymorphism as the ability for different classes to share a common interface and explains that it is commonly achieved through inheritance. The document then covers different types of polymorphism like static and dynamic, and mechanisms like function overloading, overriding, early and late binding, and pure virtual functions.
The system COLLEGE TRANSPORT MANAGEMENT SYSTEM can be used to manage the data of all type of TRANSPORT MANAGEMENT. It will support both stand alone and also networking environment. The system uses ASP.Net Technology.
The document discusses transactions and the ACID properties that ensure transaction integrity in a database management system (DBMS). It defines a transaction as a logical unit of work that can include operations like insert, delete, update, or retrieve data from a database. ACID properties - Atomicity, Consistency, Isolation, and Durability - guarantee that transactions are processed reliably and data integrity is maintained. It provides examples to illustrate how each ACID property functions and its importance for transaction processing.
The document discusses Remote Method Invocation (RMI) in Java. RMI allows objects running in one Java virtual machine to invoke methods on objects running in another Java VM. It has four layers: application layer, proxy layer, remote reference layer, and transport layer. The RMI architecture contains an RMI server, RMI client, and RMI registry. The server creates remote objects and registers them with the registry. The client looks up remote objects by name in the registry and invokes methods on them.
This Presentation shows the working of Java RMI technology, it's advantage over RPC, it's class hierarchy API and finally implementation of Factorial program using Java RMI.
Remote Procedure Call in Distributed SystemPoojaBele1
Presentation to give description about the remote procedure call in distributed systems
Presentation covers some points on remote procedure call in distributed systems
OOP concepts include classes, objects, methods, encapsulation, inheritance, and polymorphism. A class acts as a blueprint that defines properties and behaviors of an object. Objects are instantiated from classes and can have different property values. Methods define object behaviors. Encapsulation bundles data and methods into a class and hides implementation details. Inheritance allows subclasses to inherit properties and behaviors from parent classes. Polymorphism enables the same method to process different types of objects.
The document discusses method overloading and overriding in .NET. Method overloading allows a method to have the same name but different parameters within a class. Method overriding involves a subclass redefining a method from its parent class with the same name and parameters. The key differences are that overloading is resolved at compile-time based on parameters, while overriding is resolved at run-time based on the object's type. Overriding changes existing functionality, while overloading adds or extends functionality.
The document discusses the Model-View-Controller (MVC) design pattern. MVC separates an application's logic into three main components: the model, the view, and the controller. The model manages the application's data and logic, the view displays the data to the user, and the controller interprets user input and updates the model. MVC improves separation of concerns and makes applications more modular, extensible, and testable. It is commonly used for web applications, where the server handles the model and controller logic while the client handles the view.
this is one of the books of father zakaria a researcher in the field of Comparative Religion
+++
I respect him too because he always puts himself in danger for the sake of the Muslims knew To know the Superstitions of Islam and guide them to the light of Christ and Christianity and to teach them how to love and forget the violence and terrorism of Islam
The document provides information on entity relationship diagrams (ERDs), including the objectives, components, and steps to create an ERD. It defines key ERD concepts like entities, attributes, relationships, and cardinality. It describes the entity modeling process and discusses how to recognize entities, attributes, relationships, and cardinalities in a database. It outlines the general steps to create an ERD, including identifying entities, finding relationships between entities, drawing a rough ERD, defining primary keys, identifying attributes, mapping attributes to entities, and drawing a fully attributed ERD. Sample ERDs are provided to illustrate concepts like cardinality constraints.
This document discusses deadlocks in operating systems. It defines a deadlock as when a set of processes are blocked because each process is holding a resource and waiting for another resource held by another process. Four conditions must be met simultaneously for a deadlock to occur: mutual exclusion, hold and wait, no preemption, and circular wait. An example of a deadlock between two processes, Process 1 and Process 2, is provided. Methods for handling deadlocks include prevention/avoidance, detection and recovery, and ignoring the problem. Prevention negates one of the necessary conditions, while avoidance uses strategies like Banker's algorithm to ensure deadlocks are avoided.
Sequence diagrams show the interactions between objects over time by depicting object lifelines and messages exchanged. They emphasize the time ordering of messages. To create a sequence diagram, identify participating objects and messages, lay out object lifelines across the top, and draw messages between lifelines from top to bottom based on timing. Activation boxes on lifelines indicate when objects are active. Sequence diagrams help document and understand the logical flow of a system.
The document discusses first normal form (1NF) in databases. 1NF requires that each attribute contain atomic (non-divisible) values, and disallows composite attributes or attributes with multiple values. The example database violates 1NF by having a location attribute with composite values. There are three proposed solutions: 1) split the relation into two tables, 2) expand the key to separate tuples for each location, or 3) introduce additional attributes to store each location value separately.
This document discusses ADO.NET, which is a data access technology that allows applications to connect to and manipulate data from various sources. It describes the core ADO.NET objects like Connection, Command, DataReader, DataAdapter, DataSet and DataTable. It also explains the differences between connected and disconnected data access models in ADO.NET, detailing the objects used in each approach and their advantages. Finally, it provides an overview of commonly used .NET data providers like SqlClient, OleDb and Odbc.
Java applications cannot directly communicate with a database to submit data and retrieve the results of queries.
This is because a database can interpret only SQL statements and not Java language statements.
For this reason, you need a mechanism to translate Java statements into SQL statements.
The JDBC architecture provides the mechanism for this kind of translation.
The JDBC architecture can be classified into two layers :
JDBC application layer.
JDBC driver layer.
JDBC application layer : Signifies a Java application that uses the JDBC API to interact with the JDBC drivers. A JDBC driver is software that a Java application uses to access a database. The JDBC driver manager of JDBC API connects the Java application to the driver.
JDBC driver layer : Acts as an interface between a Java applications and a database. This layer contains a driver , such as a SQL server driver or an Oracle driver , which enables connectivity to a database.
A driver sends the request of a Java application to the database. After processing the request, the database sends the response back to the driver. The driver translates and sends the response to the JDBC API. The JDBC API forwards it to the Java application.
This document discusses several key design issues that occur across multiple layers in computer networks, including addressing, error control, flow control, multiplexing, and routing. Addressing refers to the need for each layer to identify senders and receivers. Error control handles imperfect physical circuits using error detection and correction codes agreed upon by both ends. Flow control deals with assembling and reassembling messages as they are transmitted. Routing selects a path when multiple options exist between source and destination. Multiplexing and demultiplexing improve network systems by combining and separating multiple communication signals.
The document provides a tutorial on PHP programming. It discusses what PHP is, how to install PHP, basic PHP syntax like variables and data types, and how to use PHP with HTML. It also covers PHP programming concepts like strings, operators, conditional statements, arrays, and more. The tutorial aims to teach the fundamentals of PHP to help readers get started with learning PHP.
Super keyword is a reference variable that is used for refer parent class object. Super keyword is used in java at three level, at variable level, at method level and at constructor level.
This document discusses polymorphism in object-oriented programming. It defines polymorphism as the ability for different classes to share a common interface and explains that it is commonly achieved through inheritance. The document then covers different types of polymorphism like static and dynamic, and mechanisms like function overloading, overriding, early and late binding, and pure virtual functions.
The system COLLEGE TRANSPORT MANAGEMENT SYSTEM can be used to manage the data of all type of TRANSPORT MANAGEMENT. It will support both stand alone and also networking environment. The system uses ASP.Net Technology.
The document discusses transactions and the ACID properties that ensure transaction integrity in a database management system (DBMS). It defines a transaction as a logical unit of work that can include operations like insert, delete, update, or retrieve data from a database. ACID properties - Atomicity, Consistency, Isolation, and Durability - guarantee that transactions are processed reliably and data integrity is maintained. It provides examples to illustrate how each ACID property functions and its importance for transaction processing.
The document discusses Remote Method Invocation (RMI) in Java. RMI allows objects running in one Java virtual machine to invoke methods on objects running in another Java VM. It has four layers: application layer, proxy layer, remote reference layer, and transport layer. The RMI architecture contains an RMI server, RMI client, and RMI registry. The server creates remote objects and registers them with the registry. The client looks up remote objects by name in the registry and invokes methods on them.
This Presentation shows the working of Java RMI technology, it's advantage over RPC, it's class hierarchy API and finally implementation of Factorial program using Java RMI.
Remote Procedure Call in Distributed SystemPoojaBele1
Presentation to give description about the remote procedure call in distributed systems
Presentation covers some points on remote procedure call in distributed systems
OOP concepts include classes, objects, methods, encapsulation, inheritance, and polymorphism. A class acts as a blueprint that defines properties and behaviors of an object. Objects are instantiated from classes and can have different property values. Methods define object behaviors. Encapsulation bundles data and methods into a class and hides implementation details. Inheritance allows subclasses to inherit properties and behaviors from parent classes. Polymorphism enables the same method to process different types of objects.
The document discusses method overloading and overriding in .NET. Method overloading allows a method to have the same name but different parameters within a class. Method overriding involves a subclass redefining a method from its parent class with the same name and parameters. The key differences are that overloading is resolved at compile-time based on parameters, while overriding is resolved at run-time based on the object's type. Overriding changes existing functionality, while overloading adds or extends functionality.
The document discusses the Model-View-Controller (MVC) design pattern. MVC separates an application's logic into three main components: the model, the view, and the controller. The model manages the application's data and logic, the view displays the data to the user, and the controller interprets user input and updates the model. MVC improves separation of concerns and makes applications more modular, extensible, and testable. It is commonly used for web applications, where the server handles the model and controller logic while the client handles the view.
this is one of the books of father zakaria a researcher in the field of Comparative Religion
+++
I respect him too because he always puts himself in danger for the sake of the Muslims knew To know the Superstitions of Islam and guide them to the light of Christ and Christianity and to teach them how to love and forget the violence and terrorism of Islam
This document is a chapter from a book by His Holiness Pope Shenouda III titled "The Spiritual Means" discussing the topic of prayer. It defines prayer as a bridge that links man to God, a relationship between God and man, and the work of the heart whether expressed in words or not. It explains that acceptable prayer comes from a pure heart, and that prayer is a weapon against devils and the means to repentance, purification, and reconciliation with God. The chapter encourages opening one's soul to God in prayer through love, thanksgiving, praise, and contemplation, and stresses the importance of finding time for prayer.
The document is a chapter from a book by H.H. Pope Shenouda III on the topic of priesthood. It seeks to refute objections to the concept of priesthood. Some argue that Christ is the only priest, while others say all believers are priests. However, the chapter argues that while spiritual or metaphorical priesthood applies to all believers, a literal and distinct priesthood requires calling and ordination, as with Aaron and his descendants in the Old Testament. It aims to clarify the difference between a universal spiritual priesthood of believers and a designated priesthood as a holy office.
This document is a chapter from a book by Pope Shenouda III titled "The Spiritual Man" that discusses man being created in the image of God. It summarizes that the spiritual man is defined by the Bible as being in God's image, which originally meant man was created in purity, righteousness, and holiness before the Fall. However, through sin man lost this divine image. Jesus Christ later restored this image of God in man by His incarnation so that through holiness, believers can be conformed to Christ's image.
she speaks and gives advice to all Muslims as she was an extreme Muslim ( fanaticism)
and then she converted to Christianity and she is happy to share with you why she made this great decision
The document discusses alleged linguistic errors in the Quran based on Arabic grammar rules. It provides 3 examples of verses where the grammar used contradicts standard Arabic. For each verse, it notes commentaries from early Islamic scholars acknowledging mistakes in transcription. The author questions how these errors can be considered evidence of the Quran's miraculous linguistic nature. He advocates for free inquiry into all religious texts and notes that the true scripture should withstand criticism.
this is one of the books of father zakaria a researcher in the field of Comparative Religion
+++
I respect him too because he always puts himself in danger for the sake of the Muslims knew To know the Superstitions of Islam and guide them to the light of Christ and Christianity and to teach them how to love and forget the violence and terrorism of Islam
DBMS security involves controlling access to databases through user accounts, passwords, and privileges. Privileges specify access rights and are granted to users at the table or view level. Views provide restricted access to tables by showing only selected columns or rows. Views can be updated if they meet certain conditions, such as containing a single table in the FROM clause. Views and privileges are used together to restrict access - views define the accessible data, and privileges control access rights to those views. This allows fine-grained access control over database information on a per-user basis.
This document provides an overview of Module 4 on designing and implementing views in SQL Server. It covers the key topics of:
- Creating and managing views, including the CREATE VIEW, ALTER VIEW, and DROP VIEW statements.
- System views and dynamic management views that provide metadata and state information.
- Performance considerations for views, such as dynamic resolution and nested views.
- Demonstrations of working with different types of views and analyzing view performance.
Presentation prepared for Oracle Tutorials series held at CERN, focusing on Oracle Database security from users and developers point of view. Apart from basics, there is a discussion about SQL injection attacks with illustrative examples.
This document discusses database user access and privileges in Oracle. It explains that the database administrator controls access by creating users, assigning them passwords and granting system and object privileges. System privileges control access to the database itself, while object privileges control access to specific database objects. The document provides examples of using SQL statements like CREATE USER, GRANT, ALTER USER, and REVOKE to manage users and privileges.
Kangaroot EDB Webinar Best Practices in Security with PostgreSQLKangaroot
The webinar will review a multi-layered framework for PostgreSQL security, with a deeper focus on limiting access to the database and data, as well as securing the data.
Using the popular AAA (Authentication, Authorisation, Auditing) framework EnterpriseDB will cover:
- Best practices for authentication (trust, certificate, MD5, Scram, etc).
- Advanced approaches, such as password profiles.
- Deep dive of authorisation and data access control for roles, database objects (tables, etc), view usage, row-level security, and data redaction.
- Auditing, encryption, and SQL injection attack prevention
Security Violations,Reasons of Security violation are,security measures,Authorization,form of authorization,Difference between drop and delete authorization ,Authorization and Views,View example ,View Query ,Granting of Privileges,Example of Granting of Privileges,Example of Granting of Privileges,Authorization grant graph ,Notion of Roles,Audit Trails ,Audit Trails ,Authorization in SQL,Read Authorization ,Update authorization ,Role creation ,The Privilege to Grant Privileges ,revoke an authorization,Cascading of Revoke
Solving the DB2 LUW Administration DilemmaRandy Goering
As a DB2 LUW Database Administrator you are probably reluctant to or prohibited from granting your users* these permissions because doing so gives them permission to other DB2 administrations tasks like stopping the database. If your users are not allowed to do these tasks then who is? Most likely, you, as the DBA will perform these and other administrative functions for your users. Would you like a way to eliminate these tasks from your daily to-do list? This presentation will discuss how to externalize specific administrative tasks with Stored Procedures, Federated procedures, Administrative SQL routines, and views.
Solving the DB2 LUW Administration DilemmaRandy Goering
As a DB2 LUW Database Administrator you are probably reluctant to or prohibited from granting your users* these permissions because doing so gives them permission to other DB2 administrations tasks like stopping the database. If your users are not allowed to do these tasks then who is? Most likely, you, as the DBA will perform these and other administrative functions for your users. Would you like a way to eliminate these tasks from your daily to-do list? This presentation will discuss how to externalize specific administrative tasks with Stored Procedures, Federated procedures, Administrative SQL routines, and views.
The document discusses controlling user access in an Oracle database. It covers creating users and roles to manage privileges, using GRANT and REVOKE statements to assign and remove privileges, and creating database links to access data on remote databases. Key topics include granting system and object privileges to users and roles, revoking privileges, and using data dictionary views to check privileges.
This document provides an overview of security and auditing in SQL Server 2008 R2. It discusses SQL Server security concepts like principals, securables and permissions. It also covers protecting the server and database scope through authentication methods, roles, logins and permissions. The document reviews keys, certificates and transparent data encryption. It concludes with an introduction to auditing security in SQL Server through tools like SQL Server Profiler, DDL triggers and the SQL Server Audit feature.
This document discusses database user privileges and roles. It explains how database administrators can create users and grant them system privileges to access the entire database. It also describes how object privileges control access to specific database objects like tables or procedures. Privileges can be granted directly to users or grouped into roles for easier management. The data dictionary stores information about privileges, and privileges can be revoked from users when no longer needed.
This document discusses administering user security in an Oracle database. It covers creating and managing database user accounts, granting and revoking privileges, creating and managing roles, and creating and managing profiles to implement password security and control resource usage. The objectives are to authenticate users, assign tablespaces, grant privileges, create roles, implement standard password features, and control user resources. It also summarizes the key points and provides an overview of tasks for a practice on administering users.
This document discusses sharing and security controls in Salesforce, including profiles, permission sets, and record-level security. Profiles control object, field, and user permissions, while permission sets can grant additional access. Record-level security can be set at the organization, manual sharing, role hierarchy, and sharing rule levels to determine which users can access individual records.
The document discusses database security and administration. It covers topics like database security concepts including permissions, logins, and accounts. It also discusses server-level security, database-level security, object permissions, and authentication. Additionally, it summarizes database server roles, backups, restores, and other administrative tasks.
This document summarizes a seminar presentation on Oracle. It provides an overview of Oracle as a company, including that it is the second largest independent software company and the first to develop 100% internet-enabled enterprise software. It then discusses Oracle database features like user access control using usernames, passwords, and privileges at both the system and object level. The presentation also covers creating and granting privileges to users and roles, as well as using database links to access data on remote databases.
The document discusses controlling user access in a database. It covers creating users and roles, granting and revoking privileges, and managing object and system privileges. The DBA can create users and roles, and grant privileges to access objects and the database. Users can be granted specific privileges on tables, views, and other objects. Privileges can later be revoked from users as needed.
SQL injection is a web application vulnerability that allows attackers to interfere with and extract data from the backend database of a website. It can give attackers access to sensitive user information like passwords, credit cards, and medical records. The document discusses how SQL injection works, how attackers can use it to view hidden data tables and subvert the logic of a website's queries, and provides recommendations for preventing SQL injection vulnerabilities.
After completing this lesson, you should be able to do the following:
Create users
Create roles to ease setup and maintenance of the security model
Use the GRANT and REVOKE statements to grant and revoke object privileges
This document provides an overview of implementing a secure environment for an Azure SQL database. It discusses authentication options like Azure Active Directory authentication and SQL authentication. It also covers encrypting data at rest using Transparent Data Encryption (TDE) and encrypting data in transit. Additionally, it describes configuring firewall rules and private endpoints for network security. The document demonstrates configuring an Active Directory admin, permission chaining, and Always Encrypted for encrypting column values. It also discusses using Azure Key Vault for securely storing encryption keys.
This document discusses database security and integrity. It covers aspects of security like access control through privileges and views. Privileges in SQL are used to control access to tables and objects through commands like GRANT and REVOKE. Views provide derived tables and allow for customized access by combining them with privileges. The document also discusses integrity constraints to ensure correct data is inserted into the database.
The document discusses exception handling in C++. It defines exceptions as conditions that occur during execution and prevent normal program continuation. Exception handling involves trying blocks of code that may throw exceptions, throwing exceptions when errors occur, and catching exceptions in handler blocks to deal with the errors. The key aspects of exception handling are try blocks for code that can throw, throw statements to indicate exceptions, and catch blocks that match exception types to handle them.
Inheritance, polymorphisam, abstract classes and composition)farhan amjad
The document discusses object-oriented programming concepts like inheritance, encapsulation, polymorphism and data hiding. It provides examples to explain inheritance, where a derived class inherits attributes and behaviors from a base class. Derived classes can specialize or extend the base class while reusing its code.
The document provides an overview of key concepts in C++ classes including this pointer, constant member functions, static members, friends of classes, memberwise assignment, copy constructors, operator overloading, type conversion operators, convert constructors, object composition, inheritance, protected members, constructors and destructors with inheritance, and overriding base class functions.
The document discusses object-oriented programming concepts like classes, objects, member functions, data members, constructors, and encapsulation. It explains that a class defines the structure and behavior of objects, with data members representing attributes and member functions representing behaviors. Constructors initialize an object's data when it is created. Encapsulation protects data by making it private and only accessible through public member functions.
Introduction to object oriented languagefarhan amjad
This document discusses object-oriented programming (OOP) and its advantages over procedural programming. It defines some key OOP concepts like objects, classes, encapsulation, and inheritance. It explains that in OOP, programs are designed as collections of these discrete objects that combine data and behaviors. This reduces complexity and promotes reusability, flexibility, and maintainability. OOP also gives data more importance and provides mechanisms to hide data that procedural languages lack.
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2. In This Lecture
• Today database Security and Integrity:
• Aspects of security
• Access to databases
• Making sure the correct data goes in.
1) Privileges
2) Views
3) Integrity constraints
• For more information
• Connolly and Begg chapters 6 and 19
Security and Integrity
3. Database Security
• Database security is • Many aspects to
about controlling access consider for security:
to information
• Some information • Legal issues
should be available • Physical security
freely • OS/Network security
• Security policies and
• Other information should
protocols
only be available to
certain people or groups • Encryption and
passwords
• DBMS security
Security and Integrity
4. Now then, now then…
• DBMS can provide
some security: • The DBMS verifies
password and checks
a user’s permissions
• Each user has an
account, username when they try to
and password either:
• These are used to • Retrieve data
identify a user and • Modify data
control their access to
• Modify the database
information
structure
Security and Integrity
5. Permissions and Privilege
• SQL uses privileges • The owner (creator)
to control access to of a database has all
privileges on all
tables and other objects in the
database objects: database, and can
grant these to others
• SELECT privilege
• INSERT privilege • The owner (creator)
of an object has all
• UPDATE privilege
privileges on that
• DELETE privilege object and can pass
them on to others
Security and Integrity
6. Privileges in SQL
GRANT <privileges> • <users> is a list of user
names or PUBLIC
ON <object>
TO <users> • <object> is the name of
[WITH GRANT OPTION] a table or view (later)
• <privileges> is a list of • WITH GRANT OPTION
SELECT <columns>, means that the users can
INSERT <columns>, pass their privileges on
to others
DELETE, and
UPDATE <columns>,
or simply ALL
Security and Integrity
7. Privileges Examples
GRANT ALL ON Employee GRANT SELECT,
TO Scooby UPDATE(Salary) ON
WITH GRANT OPTION Employee TO Shaggy
The user ‘Scooby’ can do The user ‘Shaggy’ can
anything to the Employee view the entire Employee
table, and can allow other table, and can change
users to do the same (by Salary values, but cannot
using GRANT statements) change other values or pass
on their privilege
Security and Integrity
8. Removing Privileges
• If you want to • If a user has been
remove a privilege given the same
you have granted privilege from other
you use: users then they keep
it. Everyone has to
revoke them.
REVOKE <privileges>
ON <object> • However all
FROM <users> privileges dependent
on the revoked one
are also revoked
Security and Integrity
9. An example. …
•‘Waqas’ grants ALL Waqas
privileges to ‘Saleem’, and
SELECT to ‘Sajid’ with the SELECT ALL
grant option
•‘Sajid’ grants SELECT to Sajid Saleem
‘Saqib’
SELECT ALL
•‘Saleem’ grants ALL to
‘Saqib’
Saqib
Security and Integrity
10. Removing Privileges. Rut-ro…
•Saqib quickly begins to
annoy everyone so Saleem Waqas
revokes ALL from him…
SELECT ALL
•N.b. Saqib still has SELECT
privileges from ‘Sajid’…
Sajid Saleem
•Waqas revokes SELECT from
SELECT ALL
Sajid…
•And as a consequence Saqib Saqib
loses SELECT also
Security and Integrity
11. Views
• Now Privileges work • But Views provide
at the level of ‘derived’ tables:
tables:
• You can restrict • A view is the result of
access by column a SELECT statement
which is treated like a
• You cannot restrict table
access by row
• You can SELECT from
• Views, along with (and sometimes
privileges, allow for UPDATE, etc) views
just like tables
customised access.
Security and Integrity
12. Creating Views
CREATE VIEW <name> • Example:
AS <select stmt>
• We want each user to
• <name> is the name be able to view the
names and phone
of the new view.
numbers (only) of
• <select stmt> is a those employees that
are in their own
query that returns department
the rows and
columns of the view
Security and Integrity
13. View Example
• Say we want each user to be able to view the names
and phone numbers (only) of those employees in their
own department.
• In Oracle, you can refer to the current user as USER
Employee
ID Name Phone Department Salary
E158 Mark x6387 Accounts £15,000
E159 Mary x6387 Marketing £15,000
E160 Jane x6387 Marketing £15,000
Security and Integrity
14. View Example
CREATE VIEW OwnDept AS
SELECT Name, Phone FROM Employee
WHERE Department =
(SELECT Department FROM Employee
WHERE name = USER)
GRANT SELECT ON OwnDept TO PUBLIC
Security and Integrity
15. Using Views and Privileges
• Views and privileges are
used together to control User 1 User 2 User 3
access
• A view is made which
contains the information External External
needed View 1 View 2
• Privileges are granted to
that view, rather than Conceptual
the underlying tables DBA
View
Security and Integrity
16. View Updating
• Views are like virtual tables:
• Their value depends on the ‘base’ tables that they
are defined from
• You can select from views just like a table
So what the dickens happens
to the updates, inserts, and
deletes?
Security and Integrity
17. View Updating
• Updates to the base tables change the views
and vice-versa
• But it is often not clear how to change the base
tables to make the desired change to the view.
• This also affects stuff like Java’s ResultSet.
• Are there any rules to make it clear when
updates, inserts and deletes are possible and
when they are not?
Security and Integrity
18. View Updating
• In general it is • In general it is not
possible to update possible to update
views which: views which
• Are defined on a • Are defined on more
single table than one base table
by a join operation
• Contain at least one
primary or candidate • Contain aggregate
key for that relation functions and group
by clauses
Security and Integrity
19. Example: Module Enrolment Student
Code Dept ID Code ID Name
DBS CSIT 123 DBS 123 John
RDB CSIT 123 ALG 124 Mary
ALG Math 124 DBS 125 Chris
124 RDB
125 ALG
CREATE VIEW CSIT AS
SELECT S.ID, S.Name, Count(*) AS Num
FROM Student AS S,
Enrolment AS E,
Module AS M
WHERE S.ID = E.ID ID Name Num
AND E.Code = M.Code
AND M.Dept = ‘CSIT’
123 John 1
GROUP BY S.ID, S.Name 124 Mary 2
Security and Integrity
20. View Updating Example
CSIT ID Name Num
123 Saqib 1
124 Mahd 2
UPDATE CSIT SET Num = 1 cannot update the result of the
WHERE Name= ‘Saqib’ aggregate function COUNT()…
DELETE FROM CSIT cannot delete because we have
joined several tables to create
WHERE Name = ‘Saqib’
this view…
INSERT INTO CSIT cannot insert because we have
joined several tables and none
VALUES (126, ‘Asif’, 1) have Num in anyway!
Security and Integrity
21. Combining Views and
Privileges
To restrict someone's access Employee
to a table:
ID Name Salary Department
• Create a view of that
table that shows only the
information they need to
see. • Say we want to let
the user 'John' read
• Grant them privileges on
the view . the department and
name, and be able to
• Revoke any privileges update the
they have on the
original table department (only)
Security and Integrity
22. Using Views and Privileges
Create a view: Set the privileges:
CREATE VIEW forSaqib GRANT SELECT,
AS SELECT Name, UPDATE (Department)
Department ON forSaqib
FROM Employee TO John
REVOKE ALL ON
forSaqib FROM Saqib
Security and Integrity
23. Database Integrity
• Security vs Integrity • Integrity constraints
• Domain constraints
• Database security apply to data types
makes sure that the
user is authorised to
access information • Attribute constraints
apply to columns
• Database integrity • Relation constraints
makes sure that apply to rows in a single
(authorised) users table
manipulate that
information correctly • Database constraints
apply between tables
Security and Integrity
24. 1 Example CHECK
• A check statement allows you to constrain
what can be entered into the database.
• I.e. you can define what makes it consistent.
CREATE TABLE Poker_players
(
name VARCHAR(32),
age INTEGER
CHECK (age > 18) CHECK that we
) only have legal
poker players
Security and Integrity