Can I read SQL Constraints and Joins Overview on EtoBox?

SQL Constraints and Joins Overview by aattish is a document available to read on EtoBox.

What is SQL Constraints and Joins Overview about?

SQL constraints are used to specify rules for the data in a table. If there is any violation between the constraint and the data action, the action is aborted by the constraint. Constraints can be specified when the table is created (inside the CREATE TABLE statement) or after the table is created (inside the ALTER TABLE statement).

Author

aattish

Language

EN