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Construct a generalization-specialization hierarchy for a motor-vehicle sales company. The company sells motorcycles that comprise an engine number and cost; cars that have a chassis number, an engine number, seating capacity and cost; trucks that have chassis number, an engine number and cost.
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what is natural join?
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List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
In Database software have only pure security or some dis secured by administrator?
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Define check point and its impact on data base recovery. Ans: There could be hundreds of transactions handled per minute, in a large on-line database system.
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