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Object-based Models: Use objects as key data representation components.
Examples:-
Chapter 10a review questions
State as Location within a Program In this traditional approach, location of control inside a program totally defines the program state. Any finite state machine may be implem
In an E-R diagram an entity set is represent by? In an E-R digram entity set is represted by rectangle.
How can you map NULL values to other values while display? IF( ) , IFNULL( ) keywords are used to do so. They are 'LIMIT' is used for the following kinds of problems: 1) Ans
Improved performance: As the data is located near the site of its demand, and given the inherent parallelism because of multiple copies, speed of database access may be good for di
The primary key is selected from the
What is the difference between serial and sequential files? How searching is applied on both? Ans: A serial file is one where the records have been stored in the order where
Consider the relations given below Borrower (id_no, name) Book (accno., title, author, borrower_idno) (a) Define the above relations as tables in SQL forming real world assumptio
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
Define Assertions in SQL a. An assertion is a predicate that is expressing a condition we wish the database to always satisfy. b. Domain constraints, functional dependency
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