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Increases efficiency: Data is stored close to most often used site, therefore retrieval would be faster. Also, data that is not required by local applications is not stored, therefore the size of data to be looked into is smaller.
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
Drawbacks of Database systems ?
Which model is record based logical model? Network Modelis basically known as record based logical model.
complete assignment on the above title.
Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
Explain the cartesian product in Database Management System
Explain Candidate key? Candidate Key - A candidate key is a minimal superkey, that can be used to uniquely identify a tuple in the relation.
Question: a) Discuss the concept of data independence, explaining its importance in a database environment. b) To address the issue of data independence, the ANSI-SPARC t
how to implement mid square hashing?
Explain recovery process after system failure using checkpoint. Ans: Checkpoint scheme or method is an extra component of the log based recovery system. This scheme is used to
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