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Which operator is Cartesian product in relational algebra?
Cartesian product in relational algebra is a binary operator. (It requires two operands. e.g., P X Q)
What is the use of integrity constraints? Integrity constraints make sure that changes made to the database by authorized users do not result in a loss of data consistency. The
State about the Activity Diagram Activity diagrams show flow from one activity to other. It is an ongoing non atomic execution within a state machine. Activity finally results
Define functional and multivalued dependencies. Ans: A functional dependency is a assets of the semantics of the attributes in a relation. The semantics point out how at
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
what is entity in database system?
What are the object-oriented approaches Software systems which are designed with structured design methodology never support some of desired quality attributes for example reus
Illustration of implementation of inheritance Let us take the illustration of implementation of inheritance. Suppose that we are about to implement the Stack class and by now w
What is Distributed system ? Distributed System - A distributed system consists of a number of processing parts in which are interconnected through a computer network and in
What Command You Use What Day of the week were you born
What are the Overlapping elements Overlapping elements can be found by scanning all the elements in front of deleted element in priority list for the sheet and comparing them
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