What is the purpose of the SQL 'CONSTRAINT' keyword? MCQ with Answer and Explanation

Explanation:
The CREATE TABLE command in DDL is used to define a new table structure in SQL.

Explanation:
The Network Model represents data as graphs where a record (node) can have multiple parent and child records, solving the strict single-parent limitation of hierarchical systems.

Explanation:
The DEFAULT constraint assigns a predefined default value to a column when an INSERT statement does not explicitly provide a value for that column.