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Replicating Data One approach that may support efficient access to dissimilar applications as above may be to give access to every of the applications from dissimilar replicate
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Consider the relation schemas as follows. works (person name, company name, salary); lives (person name, street, city); located in(company name, city); managers (person name
distributed quey processing
what is attribute is attribute inheritance in dbms?
Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department.
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
Probelm: a) In the context of OODBMS, define the following terms with appropriate examples. (i) Object class. (ii) Abstract class. (iii) Aggregation. (iv)
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Define null values. In some cases a certain entity may not have an applicable value for an attribute or if we do not know the value of an attribute for a certain entity. In the
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