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Explain trivial dependency?
Functional dependency of the form α ->β. is trivial if α C β. Trivial functional dependencies are satisfied by all the relations.
Attributes having a one value for a particular entity. For instance, Age is a single valued attribute of a student entity. Attributes that have more than single values
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
Some disadvantages of File Oriented System ?
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Can a filed occur in several field groups. Yes. But it leads to redundant data redundancy.
how to connect vb.net with access
Discuss the differences among the candidate keys and the primary key of a relation. Give instance to describe your answer? A candidate key is one that can be used as primary ke
3. (10 points) Assume that you have been presented with the following relation for the Baxter Aviation database: Charters (Pilot#, Pilot name, Aircraft ID#, #seats, Village, Fligh
What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
Nested Queries Let us see some more complex queries in this section. Sub-queries: Some of the basic concerns of sub-queries are: A sub-query is a SELECT statemen
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