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Illustrate the view of software architecture A model is a semantically closed abstraction of system composes of elements. It can be visualized using any of the following five v
Question: (a) List four disadvantages of the File Processing System as compared to the Database Systems. (b) The integrity of a database is enforced by integrity rules. One
What are the two types of indices? The two types of indices are:- A) Dense index B) Sparse index
Q. What is relational algebra and calculus? Explain the relational algebra operators :- Selection and predicate, set operation, joins and division. Sol. Relational Algebra
i am not clear with the climetic condition of the north indian plain. can u plz explain it for me
Discuss the problem of Spurious tuples and how we may prevent it. Ans: A spurious tuple is, mainly, a record in a database that gets created while two tables are joined bad
what is meant semantic query optimization? how does it differ from other query optimization techniques?
Explain the Recoverable Schedule A recoverable schedule is one in which for each pair of transactions Ti and Tj such that Tj reads a data item formerly written by Ti, the comm
The data of a view is not physically stored, but derived from one or more tables. True the data of a view is not physically stored
Implementation of association as an object Implement as a separate association object, independent of either class, as in Figure. An association object is a group of pairs
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