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how to operate database in access ?
Question: (a) e-Government implementations normally evolve through a multi-stage process. Describe, using appropriate examples, the stages involved in an e-Government implemen
Hierarchical
projects?
What are called multilevel indices? Indices with two or more levels are known as multilevel indices.
The Maximum no of key fields that can be used in a header is?? 50
A B-tree of order how much children m has maximum ? m has maximum m mchildren in a B tree.
What are the advantages of by using an index and what are its disadvantages ? In difference, if the search key of a secondary index is not a candidate key, it is not sufficient
Creating views with Read only option : In the view definition this option is used to make sure that no DML operations can be done on the view.
Suppose R is a relation with attributes A1, A2,..., An. As a function of n, tell how many superkeys R has, if: 1.1 The only key is A1. 1.2 The only key is A1 and A2. 1.3 The o
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