Examlex
A natural join is the same as an equi-join, except that it is performed over matching columns that have been defined with the same name, and one of the duplicate columns is eliminated.
Q6: A DBMS periodically suspends all processing and
Q18: When is it better to use a
Q21: Explain why the E-R model needed to
Q33: Establishing IF-THEN-ELSE logical processing within an SQL
Q36: Update mode is used to create a
Q46: An audit trail of database changes is
Q98: Informational and operational data differ in all
Q101: DDL is typically used during which phase
Q102: The three major types of analytics are:
Q104: A method of capturing only the changes