Dive into a comprehensive 56-minute video lecture on the Relational Model in Database Management Systems (DBMS). Explore key concepts including relations, attributes, tuples, and the degree and cardinality of relations. Learn how to design database schemas using ER and Relational models, and understand the properties of relations in RDBMS. Delve into various types of relational keys, including super keys, candidate keys, primary keys, and foreign keys. Examine integrity constraints such as domain, entity, and referential constraints. Gain insights on composite keys, surrogate keys, and the handling of NULL values in foreign keys. Perfect for students preparing for placements or anyone looking to deepen their understanding of relational databases.
Overview
Syllabus
- Introduction
- Promo
- What is Relation, its attributes, tuple?
- Degree of a relation
- Cardinality of a relation
- Designing Database schema using ER model and Relational Model
- What are RDBMS?
- Properties of Relation/Table in Relational Model
- Relational Keys, Super Key, Candidate Key, Primary Key, Alternate Key.
- What is Foreign Key?
- Composite Key, Compound Key
- What is Surrogate Key?
- Why Integrity Constraints?
- Domain Constraints
- Entity Constraints
- Referential Constraints
- Can Foreign Key have NULL values?
- Key Constraints
Taught by
CodeHelp - by Babbar
