When are they useful justify with an example, Database Management System

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When are they useful? Justify with an example.

The temporary tables are commonly used to support specialized rollups or exact application processing needs. Unlike a permanent table, a space is not allocated to a temporary table while it is established. Space will be dynamically allocated for the table as rows are inserted. The

CREATE GLOBAL TEMPORARY

TABLE command is used to create a temporary table in Oracle.

CREATE GLOBAL TEMPORARY TABLE (

) ON COMMIT {PRESERVE|DELETE} ROWS;

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