10:32

Mapping Cardinalities

22:49

Keys in RDBMS

17:17

Entity-Relationship (ER) Diagram

12:14

Database Languages and Software

13:18

Lubrication Composition

20:12

Introduction to E-R Model (Part 1)

15:06

Concept of Relationships in ER Diagram

26:11

Relational Algebra (Natural Join Operation)