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Notes April 8 - • Roll back to save point – specifies...

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April 8, 2008 Advanced SQL Equi-join or Natural join Sub-queries – a query whose inner query provides values for the search condition of the out query Transaction – a unit of work o Note: a single SQL command is automatically committed/roll backed after the command is run buy multiple SQL commands require BEGIN/END Roll back – undoes all data changes in the current transaction
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Unformatted text preview: • Roll back to save point – specifies names roll back segment for the transaction • Commit – ends the current transaction / forces a write to disk • Multiple row sub-query o <ANY means less than the maximum value o IN or =ANY o >ANY means more than the minimum value o >ALL means more than then maximum value o <ALL means less than the minimum value...
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