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SQL Constraints

What are the SQL Constraints? SQL constraints are rules that limit the types of data that can be inserted or updated into a table. Constraints are used to enforce data integrity and ensure the accuracy and consistency of data. Constraints could be either on a column level or a table level. The column-level constraints are […]

March 31, 2023 | DBMS | No comments

Introduction to keys in DBMS

What are the Keys in DBMS? In DBMS, KEYS is an attribute or set of attributes that aid in relational row (tuple) identification (table). You can use them to discover the connection between two tables. By combining one or more of the table’s columns, keys enable you to uniquely identify each row in the table. […]

February 24, 2023 | DBMS | No comments

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