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Posted Date: 2/5/2013 2:56:46 AM | Location : USA
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How many block accesses average saved on using primary index, Normal 0 ...
Normal 0 false false false EN-US X-NONE X-NONE
Distributed database management system, Question (a) Differentiate betw...
Question (a) Differentiate between the following terms: (i) Distributed Database v/s Distributed Database management System (ii) Homogeneous Distributed Database v/s Hete
Explain retrieval in qbe, Explain retrieval in QBE? Retrieval in QBE : ...
Explain retrieval in QBE? Retrieval in QBE : A "GUI" for expressing queries. Based on the Domain Relational Calculus (DRC) Actually invented before GUIs. Very co
What are the dbms languages, What are the DBMS languages? Explain. Ans...
What are the DBMS languages? Explain. Ans: a) Data Definition Languages (DDL): It is employed to specify database schema for example CREATE DROP statements etc. b) Dat
ER diagram, construct an er diagram for a hospital with a set of patients a...
construct an er diagram for a hospital with a set of patients and a set of medical doctors. associate with each patient a log of various test and examination conducted.convert er d
Describe how you can simplify operations, Describe how you can simplify Ope...
Describe how you can simplify Operations. To simplify operation, one should use inheritance, where possible to use, to reduce the quantity of distinct operations. Introduce new
Differance between join and outer join, Differentiate between join and oute...
Differentiate between join and outer join? Outer joins return all rows from at least one of the tables or views mentioned within the FROM clause, as long as those rows get toge
Define the basic operations of the relational algebra, Define the basic ope...
Define the basic operations of the relational algebra? Ans: Basic operators of relational algebra are: 1. Union (∪) - Selects tuples which are in either P or Q or in bot
Explain the cascadeless schedule, Explain the Cascadeless Schedule A ca...
Explain the Cascadeless Schedule A cascadeless schedule is one in which for every pair of transactions Ti and Tj like that Tj reads a data item before written by Ti, the commit
List two restrictions that are applied on the modification, List two restri...
List two restrictions that are applied on the modification (updation, insertion or deletion) of base tables through view. Ans: The two restrictions are: 1. If a view
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