What is sql query optimization?


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What is meant by temporal data?

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What is rowtype?

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how to present a past time in hours, minutes and seconds? : Sql dba

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Cite the differences between execution of triggers and stored procedures?

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table - new_no old_no 2345 1234 3456 2345 5678 4567 output sud be -new_no 1234 2345 3456 4567 5678

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What are some predefined exceptions in pl/sql?

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