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WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
List and also explain the dissimilar stages of DDLC ?
External failure : A failure can also result because of an external cause, such as earthquakes, fire, floods, etc. The database must be duly backed up to avoid troubles occurring d
Normal 0 false false false EN-US X-NONE X-NONE
Forward Recovery (Redo): In this system the committed changes made by a transaction are reapplied to a previous copy of the database. In simpler
Find out the names of all employees who work for first Bank Corporation from database. SELECT EMPLOYEE_NAME FROM WORKS WHERE COMPANYNAME = ‘First Bank Corporation';
Define canonical cover? A canonical cover Fc for F is a set of dependencies like F logically implies all dependencies in FC and Fc logically shows all dependencies in F.
What does Aggregation mean?
A B-tree of order how much children m has maximum ? m has maximum m mchildren in a B tree.
Which database object does not physically exist? A view database object does not physically exist.
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