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what are the reasons having variable length records
What are the advantages of DBMS ? 1. Centralized Management and Control - One of the major advantages of using a database system is in which the organization could exert, thr
Explain query execution plan? - Optimizer available in SQL Server optimizes code to be effectively executed. - A query execution plan demonstrates how this optimizer would r
What are the several forms of identity? a) Value b) Name c) Built-in
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
Explain Authorization and Integrity Manager ? Authorization and Integrity Manager: Tests for the satisfaction of integrity constraints and checks the authority of users to acce
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
INTRODUCTION Databases and database systems have become an essential part of our daily life. We encounter many activities that involve some interaction with a database almost
What are the properties in a relation ? In a relation Ordering of rows is immaterial and No two rows are identical.
Explain the two constraints, check and foreign key in SQL along with an example for each. Give the syntax. CHECK constraint - CHECK constraint specifies an expression which
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