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Define object-relational systems? Systems that give object-oriented extensions to relational systems are known as object-relational systems.
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
What function divides one numeric expression by another and returns the remainder? MOD function divides one numeric expression by another and returns the remainder.
how to make an e r diagram?
Explain trivial dependency? Functional dependency of the form α ->β. is trivial if α C β. Trivial functional dependencies are satisfied by all the relations.
What is a state chart diagram? State diagrams (State Chart Diagram) explain all possible states that a particular object can get into, and how object's state changes as result
What is meant by heuristic optimisation? Discuss the main heuristics that are applied during query optimisation. Ans: In heuristic optimization, heuristics are employed to r
Explain the Management of Data Store Every system irrespective of its nature of application requires storing permanent data for consequent use in problem solving. Some objects
What is a Database? To know what database is, we have to start from data, which is the basic building block of any DBMS. Data: Facts, figures, statistics etc. having no pa
Explain Data Dictionary in short?
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