mapping, Database Management System

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external and internal mapping with examples

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What does the extract statement do in extract datasets? The data is written to virtual memory by extract commands.

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Indexed (Indexed Sequential) File Organisation It organises the file like a big dictionary, i.e., records are kept in order of the key but an index is stored which also allows

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Higher Normal Forms Is there more normal forms beyond BCNF? Yes, though, these normal forms are not based on the concept of functional dependence. More normalisation is needed if

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