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Primary key

In database design, a primary key is a value that can be used to look up a particular row in a table. Examples are names in a telephone book (to look up telephone numbers), words in a dictionary (to look up definitions), and Dewey Decimal Numbers (to look up books in a library).



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DB

... mean the following: dB is the abbreviation for Decibel; see Bel DB is a French automobile maker; see DB (car) DB is the abbreviation for Deutsche Bahn, the majo ...

 
 
 
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