1.19- Object Oriented Database Model In DBMS In Hindi | Data Models In DBMS In Hindi скачать в хорошем качестве

1.19- Object Oriented Database Model In DBMS In Hindi | Data Models In DBMS In Hindi

1.19- Object Oriented Database Model In DBMS In Hindi | Data Models In DBMS In Hindi Notes Link: http://www.tutorialsspace.com/Downloa... Complete Playlist: DBMS - Data Base Management System Tutorials    • DBMS Complete Syllabus- All University exa...   [With Notes & PDF File] | Database Management System In HINDI    • [With Notes & PDF File] | Database Managem...   data models in dbms,data models, types of data models, hierarchical data model, network data model, object oriented data model, relational data models, dbms tutorials, dbms tutorials in hindi, dbms lectures, dbms lectures in hindi, database management tutorials, database management lectures, dbms tutorials online, dbms lectures online, dbms gate lectures in hindi, dbms ugc net lectures, dbms gate lectures, #dbms #gatedbmslecturesinhindi #ugcnetdbmslecturesinhindi #gatedbmslectures #ugcnetdbmslectures #dbmsLectures #dbmsTutorials Social Links Twitter Account:   / tutorialsspace   FaceBook Page:   / tutorialsspace   Instagram :  / tutorialsspace   Telegram Channel: https://t.me/TutorialsSpace Telegram Group: t.me/TutorialsSpace Pin-Interst:   / tutorialsspace   youtube:    / tutorialsspace   1.13- 2 Tier Architecture of DBMS | 2 Tier Client Server Architecture Of DBMS | dbms gate tutorials    • 1.13-  2 Tier Architecture of DBMS | 2 Tie...   1.14- 3 Tier Architecture Of DBMS | 3 tier Client Server Architecture In DBMS | dbms gate lectures    • 1.14- 3 Tier Architecture Of DBMS | 3 tier...   1.15- Data Models In DBMS | Data Models And Their Characteristics in DBMS | DBMS- NET GATE    • 1.15- Data Models In DBMS | Data Models An...   1.16- Data Models- Types Of Data Models In DBMS In Hindi | Data Models In DBMS    • 1.16- Data Models- Types Of Data Models In...   1.17- Hierarchical Data Model In DBMS In Hindi | Types Of Data Models In DBMS In Hindi    • 1.17- Hierarchical Data Model In DBMS In H...   1.18- Network Database Model In DBMS In Hindi | What Is Network Database Model in dbms    • 1.18- Network Database Model In DBMS In Hi...   The Components of the Object Oriented Data Model • An object is an abstraction of a real-world entity. In general terms, an object may be considered equivalent to an ER model’s entity. More precisely, an object represents only one occurrence of an entity. (The object’s semantic content is defined through several of the items in this list.) • Attributes describe the properties of an object. For example, a PERSON object includes the attributes Name, Social Security Number, and Date of Birth. • Objects that share similar characteristics are grouped in classes. A class is a collection of similar objects with shared structure (attributes) and behavior (methods). In a general sense, a class resembles the ER model’s entity set. However, a class is different from an entity set in that it contains a set of procedures known as methods. A class’s method represents a real-world action such as finding a selected PERSON’s name, changing a PERSON’s name, or printing a PERSON’s address. In other words, methods are the equivalent of procedures in traditional programming languages. In OO terms, methods define an object’s behavior. • Classes are organized in a class hierarchy. The class hierarchy resembles an upside-down tree in which each class has only one parent. For example, the CUSTOMER class and the EMPLOYEE class share a parent PERSON class. (Note the similarity to the hierarchical data model in this respect.) • Inheritance is the ability of an object within the class hierarchy to inherit the attributes and methods of the classes above it. For example, two classes, CUSTOMER and EMPLOYEE, can be created as subclasses from the class PERSON. In this case, CUSTOMER and EMPLOYEE will inherit all attributes and methods from PERSON.