Unit II: Data Models | BCA 4th Semester Database Management System (DBMS) Notes Pdf

The data model emphasizes on what data is needed and how it should be organized instead of what operations will be performed on data. Data Model is like an architect's building plan, which helps to build conceptual models and set a relationship between data items.

In this “Data Models – Database Management System” you will learn about the following topics:

1. Introduction to Data Modelling
2. Data Model
3. Types of Data Models
4. Conceptual Data Model
5. Logical Data Model
6. Physical Data Model
7. ER-Diagram
8. Why Use ER Diagrams?
9. ER Diagrams Symbols & Notations
10. Components of ER Diagram
11. Entity
12. Entity Set
13. Difference between Strong Entity Set and Weak Entity Set
14. Attribute
15. Relationship
16. Degree of Relationship/Types of Relationship
17. Participation Constraints
18. Mapping Constraints/Cardinality Ratios
19. Notation Styles That Express Cardinality
20. Extended ER Features
21. Generalization
22. Specialization
23. Aggregation
24. Construction of ER-Diagram (Practice)
25. UML Class Diagram
26. Benefits of Class Diagram
27. Essential Elements of A UML Class Diagram
28. Example of UML Class Diagram
29. Difference between Entity and Object
30. Alternate Data Models
31. Hierarchical Model
32. Features of a Hierarchical Model
33. Network Data Model
34. Features of a Network Data Model
35. Relational Data Model
36. Features of Relational Data Model
37. Object-Oriented Data Model

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BCA 4th Semester Database Management System (DBMS) Notes Pdf:

• Unit I: Introduction To Database Management System (DBMS)
• Unit III: Relational Model
• Unit IV: Relational Database Query Languages
• Unit V: Database Constraints and Relational Database Design
• Unit VI: Database Security
• Unit VII: Query Processing
• Unit VIII: File Organization and Indexing
• Unit IX: Crash Recovery
• Unit X: Transaction Processing and Concurrency Control
• Unit XI: Advanced Database Concepts