Chap09
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The document discusses database management systems and databases. It covers fundamental concepts like data organization, database structures, relational databases, and database management system components. It also describes the roles and responsibilities of database administrators and the process of knowledge discovery in databases.
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The document provides an introduction to database management systems (DBMS). It defines what a database and DBMS are, and explains that a DBMS allows users to define, create, and manipulate databases for applications. It also discusses some key components of a DBMS environment, including software, hardware, data, procedures, and database access languages like SQL. The document compares traditional file-based data storage with DBMS approaches and outlines some benefits DBMS provide like reduced redundancy, improved data integrity and sharing, and increased accessibility.
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This document provides an overview of database management systems (DBMS). It defines a DBMS as a collection of data and applications used to access and manage that data. The document then briefly discusses the history of DBMS development from early hierarchical models to today's dominant relational model. It describes the key purposes of using a DBMS, including reducing data redundancy and improving data integrity, security and consistency. The document outlines the main components and architecture of a DBMS, including its internal, conceptual and external levels. It also covers the advantages and disadvantages of using a DBMS, as well as common DBMS languages like SQL.
csedatabasemanagementsystemppt-170825044344.pdf
This document provides an overview of database management systems (DBMS). It defines a DBMS as a collection of data and applications used to access and manage that data. It briefly outlines the history of DBMS development from early hierarchical models to today's dominant relational model. It describes the purpose of a DBMS in ensuring data integrity, security, and consistency. It also covers data models, DBMS architecture including three levels (external, conceptual, internal), components, advantages and disadvantages. Finally, it discusses DBMS languages including data definition language to define schemas and data manipulation language to manage data.
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This document provides an overview of database management systems (DBMS). It defines a DBMS as a collection of data and set of programs used to access and manage that data. The document then briefly discusses the history of DBMS development from early hierarchical models in the 1960s to relational models today. It describes the purposes of a DBMS in ensuring data integrity, reducing redundancy, and improving security and access. The document outlines several data models used in DBMS, including hierarchical, network, relational, object-oriented, and semi-structured models. It describes the typical architecture of a DBMS including external, conceptual, and internal levels. Key components and advantages/disadvantages of DBMS are also summarized, along with
Database-management-system-dbms-ppt.pptx
This document provides an overview of database management systems (DBMS). It defines a DBMS as consisting of a collection of persistent data and a set of programs to access and manage that data. It briefly discusses the history of DBMS development from early hierarchical models to today's dominant relational model. It describes the purposes of a DBMS in ensuring data integrity, security, and independence from applications. It also outlines the conceptual architecture of a DBMS including its external, conceptual, and internal levels. Key components and features of DBMS are defined, along with advantages like data sharing and consistency, and disadvantages like implementation costs. Finally, it distinguishes between data definition and manipulation languages used to define and interact with database schemas and data.
DATA BASE MANAGEMENT SYSTEM BY SAIKIRAN PANJALA
A database management system (DBMS) is software that allows organizations to develop databases for applications and control their creation, organization, and use. A DBMS consists of a collection of persistent data and programs to access, update, and manage that data. Early DBMS used hierarchical and network data models, while most modern DBMS are relational and use SQL. A DBMS provides data independence, security, integrity, and concurrent access. It addresses issues like data redundancy, inconsistency, and isolation that arise without a DBMS.
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Chap09
- 4. Organization of Data into Folders 9-
- 5. Common Models for Organizing Data Files 1. Function 2. Frequency of Use 3. Users 4. Projects 9-
- 6. Fundamental Building Blocks for Database Structures 1. Data Value 2. Data Field 3. Data Record 4. Data File 9-
- 8. Data Structure vs. Spreadsheet Terminology Spreadsheet Term Data Structure Term Table File Column Field Row Record 9-
- 12. Relational Database Vendors 1. IBM 2. Informix Software, Inc. 3. Microsoft 4. Oracle 5. Sybase 9-
- 14. Tables Book Name Author Required Banking Principles Knox 25 Management Information Systems 8E McLeod and Schell 75 Personal Sales Techniques Wei 70 Quality Service, Quality Customer Brutus 54 9-
- 15. Description of Book Table 9-
- 16. Description of Student Table 9-
- 18. Salesperson file Sales statistics file Customer file Accounts receivable file Buyer file Inventory file Vendor file Accounts payable file Purchase order file General ledger file A Database Consists of One or More Files 9-
- 22. Define the Problem Identify necessary decisions Describe information needs Determine the necessary processing Specify data needs 1. 2. 3. 4. 5. 6. Data Needs Can Be Defined by Taking a Problem- Oriented Approach Data Specifications 9-
- 23. Create enterprise data model Develop Database Database 2. 1. Strategic Planning for Information Resources Data Needs Can Be Defined by Creating an Enterprise Model Enterprise Data Model 9-
- 24. Describing the Database Contents Data dictionary Enter dictionary data Data description language (DDL ) Schema Step 1 Step 2 9-
- 26. Rule for Required Field 9-
- 27. Enforcing Value of BookName 9-
- 31. Example OLAP Output Marital Status Married Single Cash $752 $849 Payment Credit $1,277 $2,019 Method Check $283 $165 9-
- 33. Data description language processor Database manager Query language Data manipulation language (DML) Application programs Database description (schema) Database Information requests Information Transaction log Backup/recovery module Performance statistics Performance statistics processor Performance statistics A DBMS Model 9-
Editor's Notes
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