what is the difference between primary key and unique key? : Sql dba

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How can I speed up sql query?

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What is procedure function?

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How does postgresql compare to "nosql"?

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How are multiple column = value pairs delimited in the SET clause of an UPDATE statement? 1. With commas (SET price = 0, status = 'I') 2. With parentheses (SET (price = 0) (status = 'I')) 3. With double-pipes (SET price = 0 || status = 'I') 4. With square-brackets (SET [price = 0] [status = 'I'] 5. With single or multiple spaces (SET price = 0 status = 'I')

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what is commit? : Sql dba

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What is data control language?

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What is the difference between nested table and varray?

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What is count * in sql?

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How to call a javascript function from pl sql?

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<<labele>> declare a=10 b=20, begin some statements declare a=30 c=40 end; what is the A value in nested block?

1 Answers   ITC Infotech,

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Is it mandatory for the primary key to be given a value when a new record is inserted?

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