An object database is a database management system in which information is represented in the form of objects as used in object-oriented programming. Object databases are different from relational databases which are table-oriented. Object-relational databases are a hybrid of both approaches
Database systems that were based on the object data model were known originally as object-oriented databases (OODBs).These are mainly used for complex objects
An Introduction to Architecture of Object Oriented Database Management System and how it differs from RDBMS means Relational Database Management System
Database systems that were based on the object data model were known originally as object-oriented databases (OODBs).These are mainly used for complex objects
An Introduction to Architecture of Object Oriented Database Management System and how it differs from RDBMS means Relational Database Management System
This presentation discusses the following topics:
Object Oriented Databases
Object Oriented Data Model(OODM)
Characteristics of Object oriented database
Object, Attributes and Identity
Object oriented methodologies
Benefit of object orientation in programming language
Object oriented model vs Entity Relationship model
Advantages of OODB over RDBMS
You can get clear knowledge about the functional dependencies in "Normalization". And also the rules, types of FDs and finally the closure and its applications
Adbms 11 object structure and type constructorVaibhav Khanna
Unique Identity:
An OO database system provides a unique identity to each independent object stored in the database.
This unique identity is typically implemented via a unique, system-generated object identifier, or OID
The main property required of an OID is that it be immutable
Specifically, the OID value of a particular object should not change.
This preserves the identity of the real-world object being represented.
Type Constructors:
In OO databases, the state (current value) of a complex object may be constructed from other objects (or other values) by using certain type constructors.
The three most basic constructors are atom, tuple, and set.
Other commonly used constructors include list, bag, and array.
Type constructor concepts where the examples are clearly described and points are easy to understand. Every point is clearly connected once we go through ppts.
This presentation discusses the following topics:
Object Oriented Databases
Object Oriented Data Model(OODM)
Characteristics of Object oriented database
Object, Attributes and Identity
Object oriented methodologies
Benefit of object orientation in programming language
Object oriented model vs Entity Relationship model
Advantages of OODB over RDBMS
You can get clear knowledge about the functional dependencies in "Normalization". And also the rules, types of FDs and finally the closure and its applications
Adbms 11 object structure and type constructorVaibhav Khanna
Unique Identity:
An OO database system provides a unique identity to each independent object stored in the database.
This unique identity is typically implemented via a unique, system-generated object identifier, or OID
The main property required of an OID is that it be immutable
Specifically, the OID value of a particular object should not change.
This preserves the identity of the real-world object being represented.
Type Constructors:
In OO databases, the state (current value) of a complex object may be constructed from other objects (or other values) by using certain type constructors.
The three most basic constructors are atom, tuple, and set.
Other commonly used constructors include list, bag, and array.
Type constructor concepts where the examples are clearly described and points are easy to understand. Every point is clearly connected once we go through ppts.
Object Query Language is a query language standard for object-oriented databases modeled after SQL. OQL was developed by the Object Data Management Group. Because of its overall complexity nobody has ever fully implemented the complete OQL.
Multi-Model Data Query Languages and Processing ParadigmsJiaheng Lu
Specifying users' interests with a formal query language is a typically challenging task, which becomes even harder in the context of multi-model data management because we have to deal with data variety. It usually lacks a unified schema to help the users issuing their queries, or has an incomplete schema as data come from disparate sources. Multi-Model DataBases (MMDBs) have emerged as a promising approach for dealing with this task as they are capable of accommodating and querying the multi-model data in a single system. This tutorial aims to offer a comprehensive presentation of a wide range of query languages for MMDBs and to make comparisons of their properties from multiple perspectives. We will discuss the essence of cross-model query processing and provide insights on the research challenges and directions for future work. The tutorial will also offer the participants hands-on experience in applying MMDBs to issue multi-model data queries.
This is a PowerPoint Slide where I introduce Accounting.
Accounting is the system of recording financial transactions with both numbers and text in the form of financial statements. It provides an essential tool for billing customers, keeping track of assets and liabilities (debts), determining profitability, and tracking the flow of cash.
An encoder in digital electronics is a one-hot to binary converter. That is if there are 2ⁿ input lines, and at most only one of them will ever be high, the binary code of this 'hot' line is produced on the n-bit output lines. A binary encoder is the dual of a binary decoder.
Time-division multiplexing is a method of transmitting and receiving independent signals over a common signal path by means of synchronized switches at each end of the transmission line so that each signal appears on the line only a fraction of time in an alternating pattern.
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Most people who fall sick with COVID-19 will experience mild to moderate symptoms and recover without special treatment.
Routing is the process of selecting a path for traffic in a network or between or across multiple networks. Broadly, routing is performed in many types of networks, including circuit-switched networks, such as the public switched telephone network (PSTN), and computer networks, such as the Internet.
-H.I.Bijoy
Time and Financial Management. It all about how to manage time, how to organize time, money with career or goal, etc. To reorganize young people on time and financial management from a practical point of view.To create feelings about time and money simultaneously in relation to successes.
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The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
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Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
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http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Overview on Edible Vaccine: Pros & Cons with Mechanism
Object oriented database
1. TOPIC
Object Oriented Database
Present By:
Md. Hasan Imam Bijoy
Student of C.S.E
Email: hasan15-11743@diu.edu.bd
Daffodil International University, Dhaka, Bangladesh.
2. Presentation Outline:
Object Definitions
Object Structures
Object-Oriented Concepts
Object-Oriented Databases
Object Query Language(OQL) with Example
Object-Oriented SQL
Advantage of OODBS etc.
3. Definition of an Object
Object – User defined complex data types
• An object has structure of state (variable) and methods
(behavior/operation)
An Object is described by four characteristics:
• Identifier : a system-wide unique id for an object
• Name : an object may also have a unique name in DB
(optional)
• Lifetime: determines if the object is persistent or transient
• Structure: Construction of objects using type constructor
4. Object Structure
The State (current value) of a complex object may be constructed
from other objects (or other vales) by suing certain type
constructor
Can be represent by (I,C,V)
I is an unique id
C is a type constructor
V is the object state
Basic types : Atom, tuple and set
Collection type : list, bag and array
5. Object Oriented Concept
Abstract Data Types
Class definition, provide extension to complex attribute types
Encapsulation
Implementation of operation and object structure hidden
Inheritance
Sharing of data withing hierarchy scope, support code
reusability
Polymorphism
Operator overloading
6. Object Oriented Database
Abstract Data Types
A database system that incorporates all the important
object-oriented concepts
Some additional feature
Unique Object identifiers
Persistent object handling
7. Object Query Language (OQL)
Declarative Query Language
Not Computationally Complete
Syntax based on SQL(Select, from where)
Additional flexibility (queries with user defined operators and types)
8. Example of OQL
The following is a sample query
“what ate the name of the black product?”
Select distinct p.name
From Products p
Where p.color = “Black”
Valid in both SQL and OQL, but result are different .
9. Result of the Query (SQL)
Product No Name Color
P1 Ford Mustang Black
P2 Toyota Celica Green
P3 Mercedes SLK Black
Result:
Name
Ford Mustang
Mercedes SLK
The statement queries a relational
database
Returns a table with rows
Original Table:
10. Result of the Query (OQL)
Product No Name Color
P1 Ford Mustang Black
P2 Toyota Celica Green
P3 Mercedes SLK Black
Original Table:
Result:
String String
Ford Mustang Mercedes SLK
The statement queries a object
oriented database
Returns a collection of object
11. Comparison
Queries look very similar in SQL and OQL, sometimes they are the
same
In fact , the result they give are very different
Query returns:
OQL SQL
Object Tuple
Collection of Objects Table
12. Object Oriented SQL – SQL3
Foundation for OO database management systems –
ORACLE8, DB2, etc.
New features – “relation” & “Object oriented”
Relational Feature – new data types, new predicts,
enhanced semantics, additional security and an active
database
Object Oriented Features – support for functions and
procedures
13. User Define Datatypes
Creating a “row type”
Example:
Create row type AddressType(
street char(50)
city char(20));
Create row type StarType(
Name char(30)
Address AddressType)
14. Creating Data types
Creating “Table”
• Create table Address of type AddressType;
• Create table MovieStar of type StarType;
• Instances of Row types are tuples in table;
15. Sample Query
Find the name and street addresses of those
MovieStars who stay in the city “Columbus”;
• Select MovieStar.name,
MovieStar.address.street
From MovieStar
Where MovieStar.address.city = “Columbus”;
16. Complex Data & Queries:
A Water Resource Management example
A Database of state wide water projects
Includes a library of picture sliders
Indexing according to predefined concepts –
prohibitively expensive
Type of Queries
Geographic locations
Reservoir levels during droughts
Recent flood condition, etc.
17. Complex Data & Queries:
Addressing these queries
Linking this database to landmarks on a topographic
map
Examining the captions for each slide
Implementing image-understanding programs
Inspecting images and ascertaining attributes
These type of queries necessitate dedicated “methods”
18. Creating Function
Create function one() returns int as “select 1 as RESULT”
language “SQL”
Select one() as answer:
Result
Answer
1
19. Creating “Table” & “Methods”
Implementation:
Create tables slides(
id int,
date date,
Caption document,
pictureCD_Image,
method containsName
(name varchar)
return boolean
as external name “matching”
language ‘C’ );
20. Implementation
Sample Query
Find a picture of a reservoir with lower level which
is in “Sacramento”
Select slides P, landmark L
Where isLowWaterLevel (P.picture) and
P.containsName (L.name) and L. name=“Sacramento”;
21. Object-Relational Mapping
Object-Relational Mapping (ORM) systems built on top of traditional relational databases
Implementor provides a mapping from objects to relations
Objects are purely transient, no permanent object identity
Objects can be retried from database
System uses mapping to fetch relevant data from relations and construct objects
Updated objects are stored back in database by generating corresponding update/insert/delete statements
The Hibernate ORM system is widely used
described in Section 9.4.2
Provides API to start/end transactions, fetch objects, etc.
Provides query language operating directly on object model
queries translated to SQL
Limitations: overheads, especially for bulk updates
22. Advantage of OODBMS
Designer can specify the structure of objects and
their behavior (methods)
Better interaction with object-oriented language
such as Java and C++
Definition of complex and user-defined types
Encapsulation of operations and user-defined
methods
23. A Water Resource Management example
A Database of state wide water projects
Includes a library of picture sliders
Indexing according to predefined concepts –
prohibitively expensive
Type of Queries
Geographic locations
Reservoir levels during droughts
Recent flood condition, etc.