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What is vertical fragmentation?
Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
How many types of Views are there? There are Four types of views:- Database View Help View Projection View Maintenance View
What are the situations while DBMS should not be used? DBMS should not be used in situations like: (i) No need of security. (ii) Not difficulty to access the data (iii) N
What is horizontal fragmentation? Horizontal fragmentation divides the relation by assuming every tuple of r to one or more fragments
explain external view
Hi, Do you offer private tuition for DBMS?
What is storage manager? A storage manager is a program module that gives the interface among the low level data keeps in a database and the application programs and queries su
Load sample data into the database tables design and test queries to return the following information • All rows and columns for employees • All rows and columns for customers •
Creating views with Replace option : This option is used to alter the definition of the view without recreating and dropping it or regranting object privileges previously granted o
Question 1 Discuss on transmission impairments Question 2 What is framing? Question 3 Write a note on 10Base2 10Base- T Question 4 Explain the rev
Type of views : Simple views and Difficult Views Feature Simple Views Complex Views Number of tables One
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