Can I read Unit 3 on EtoBox?

Unit 3 by Deepika Bidri is a document available to read on EtoBox.

What is Unit 3 about?

The document explains how to specify constraints in SQL to maintain data integrity, including attribute constraints (NOT NULL, DEFAULT, CHECK), key constraints (PRIMARY KEY, UNIQUE), and referential integrity constraints (FOREIGN KEY). It also covers the use of SQL commands for creating tables with constraints, naming them, and handling actions on foreign keys during updates and deletions. Additionally, it provides examples of basic SQL retrieval queries and the importance of using qualified names to avoid

Author

Deepika Bidri

Language

EN