DBMS | Chapter 5 Part 1 Unit 2 | Class12 Semester 4 | Computer Application & Science
Автор: Ghosh Computer Academy
Загружено: 2025-12-03
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DBMS | Chapter 5 Part 1 Unit 2 | Class12 Semester 4 | Computer Application & Science
#dbms #semester4dbms #class12dbms #semester4computerclass #class12python #wbchse
Database Management System 20 Marks
Introduction: Drawbacks of Legacy System, Advantages of DBMS, Layered Architecture of Database, Data Independence, Data Models, Schemas and Instances, Database Languages, Database Users, DBA, Data Dictionary.
Entity Relationship (ER) Modelling: Entity, Attributes and Relationship, Structural Constraints, Keys (Super Key, Key, Candidate Key, Alternate Key, Primary Key), ER Diagram of Some Example Database, Weak and strong Entity Set, Specialization and Generalization, Constraints of Specialization and Generalization, Aggregation.
Relational Model: Basic Concepts of Relational Model, Relational Algebra.
Integrity Constraints: Domain Constraints, Referential Integrity, View.
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