A key is a column or a group of columns that identifies a unique row in a table.
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Q48: The application program serves as an intermediary
Q49: A group of similar rows or records
Q50: A database cannot have more than one
Q51: The collection of data for all columns
Q53: Each of the elements of the database
Q54: To find out what a database contains,we
Q55: SQL statements can be issued directly to
Q56: DBMS administrative functions include adding structures to
Q56: The lost-update problem can be prevented by
Q57: Query forms are used to read,insert,modify,and delete
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