|
Title: Briefly describe the various tasks of the primary key. Post by: lambchop03 on Feb 10, 2019 Briefly describe the various tasks of the primary key.
Title: Briefly describe the various tasks of the primary key. Post by: Omama on Feb 10, 2019 The primary key is used for four primary tasks. First, it is used to uniquely identify the rows in a table. Second, it is used to represent rows in relationships. Third, most DBMS products use the values of the primary key to organize the storage of the relation. Finally, primary keys are used in indexes and other structures to improve performance for search operations.
|