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Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
A relation has: Relational Schema Relation instance Relational Schema: A relational schema shows the relation's name, its attributes and the domain of every a
What is the role of ORDER By Clause? ORDER BY clause: The ORDER BY clause permits you to sort the records in your result set. The ORDER BY clause can just be used in select s
create an e-r diagram usuing graphical dipicted software that could theoritically be used in resturant application
Explain differance between Primary and secondary storage ? Primary and secondary storage Computer storage is classified within primary(main) memory and secondary(per
What is Relational Algebra? Relational algebra is a Procedural query Language?
Define blocks? The database system resides eternally on non-volatile storage, and is into fixed-length storage units known as blocks.
what benefit can a company gain by managing its own infrasture and services
#questiononsider the following relation: CAR_SALE =(CAR_ID,oPTION_TYPE, Option_listpreice, Sale_date, Option_discountedprice)..
What is candidate key? Candidate Key - A candidate key of an entity set is a minimal superkey, which uniquely identifies each row in the relation.
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