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What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
We are looking to find someone to prepare a database which improves upon the one we are using at present. The present database will be found here: Click on filter options and yo
Define object-relational systems? Systems that give object-oriented extensions to relational systems are known as object-relational systems.
Differentiate between Procedural and non procedural languages ? Procedural and non procedural languages - A procedural language specifies the operations to be performed on th
How does the two phase protocol ensure serializability in database schedules? Ans: A transaction is termed to follow the two-phase locking protocol if all locking operations
Give an example of multiple inheritance. One example of multiple inheritance is a committee for students affair which include faculty and administrative staff member.
brief history,definition,current trends and future trends if any of data fragmentation
Define the Division Operation of Relational Algebra Let R be a relation comprising attributes (A1,...Ap,Ap+1,...An) and S comprising attributes (Ap+1,...An) DEF: Division
What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
data models are being replaced over years. Reasons and why does that happen?
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