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Describe integrity and security?
a) Domain constraint
b) Referential integrity
A value that appears in one relation for a given set of attributes also appear for a particular set of attributes in another relation. This condition is known as referential integrity.
a) Referential integrity and E-R models
b) Database modification
c) Referential integrity in SQL
What are the requirements to ensure the objectives of file management principle is realized?
differences between a classified catalog and a dictionary catalog
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#what is cursor its uses ? Explain it
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