A database alias can also arise because the same data item is called different things in different programs written in different languages.
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Q18: Records are contiguous when they are physically
Q19: Sequential-access files are often referred to as
Q20: Variable-length records are easier to manipulate than
Q21: SQL is a non-procedural programming language.
Q22: A petabyte is 1015 bytes (characters).
Q24: OLAP is a multidimensional generalization of the
Q25: Individual logical expressions may be combined in
Q26: Software tools such as Casewise are used
Q27: An advantage of OLAP is its fast
Q28: A major advantage of DBMS is its
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