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What is meant by object-oriented data model?
The object-oriented paradigm is based on encapsulation of data and code related to an object in to a one unit, whose contents are not visible to the outside globe.
Type of database technology
Explain degree of relation? Degree of a Relation - The degree or arity of a relation is the number of attributes n of its relation schema.
wh
er diagram of sport
(A) For the relation; CarSales (RegNo, BuyerName, Address, SalesPerson, Make, Model, Commission) The following functional dependences hold, RegNo _ID à Make, Model Reg
Describe relational model? Structure of relational data base Basic structure Database schema Keys Schema diagram Query languages
Differentiate between Key and superkey? Key and superkey - A key a single attribute or a combination of two or more attributes of an entity set in which is used to identify o
Define deadlock prevention. Deadlock prevention is a set of methods for ensuring that at least one of the four essential conditions like mutual exclusion, hold and wait, no pre
what is relationship inheritance and attribute inheritance
how to make an e r diagram?
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