Introduction to SQL Constraints
This lesson offers a comprehensive overview of database constraints, covering various types of constraints and emphasizing their significance in ensuring data integrity and consistency within databases.
SQL Query NOT NULL and UNIQUE Constraints
Delving deeper into constraints, this lesson focuses specifically on the NOT NULL and UNIQUE constraints, elaborating on their respective roles, how they are implemented, and their impact on database structure and data quality.
PRIMARY KEY Constraint and Beyond
This lesson delves into the PRIMARY KEY constraint in detail, elucidating its significance as a cornerstone in database design. Additionally, it introduces other crucial constraints such as CHECK, DEFAULT, and FOREIGN KEY, offering insights into their functionalities and practical application in database management.