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Differentiate between a unique key and a primary key.
- By default, clustered index on column are created by primary key while nonclustered index are created by unique key.
- Primary key doesn't allow NULLs however unique key allows one NULL.
For each 1: n relationship type R involving two entities E1 and E2, we recognize the entity type (say E1) at the n-side of the relationship type R and contain primary key of the en
Explain pipelining. Ans: In order to describe pipelining in simple terms, think of it as breaking down processor functions into smaller and smaller parts. For instance,
Control as Concurrent Tasks The expression control as simultaneous task means applying control for those events of object which can happen simultaneously. An object can be imp
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
You are to write a property management database program that allows a real estate agent to view, add, search, and save property listings. The program is to do the following: 1.
case study
What is the use of keyword ISA? The use of keyword ISA is to show that a class is a specialization of another class.
What are the properties in a relation ? In a relation Ordering of rows is immaterial and No two rows are identical.
What is normalization? It is a method of analysing the given relation schemas based on their Functional Dependencies (FDs) and primary key to attain the properties (1).Minim
Describe how you can simplify Operations. To simplify operation, one should use inheritance, where possible to use, to reduce the quantity of distinct operations. Introduce new
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