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Explain I command in QBE ?
I : It is the command in QBE that is used to insert tuple (s) into the database
what is the importance of back up files
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
Relational Model: The relational model uses a collection of tables to represent both data and the relationships among those data. Each table has multiple columns and each column h
wh
Define Atom of domain relational calculus An atom has the outline 1 , x 2 , ... , x n > -> r , in which r stands for a relation on n attributes and x 1 , x 2 , ... , x n ar
What is Cross Product? Simply Cross product is Binary Operator
ALTER TABLE Command : This command is used for variation of existing structure of the table in the given situation: When a new column is to be added to the table structure.
Differentiate between Primary and secondary storage? Primary and secondary storage - Primary storage device stores the data temporarily. Primary storage is commonly used thro
Data Base Management System 1. Draw the Architecture of MySQL and explain about its subsystems briefly. 2. Elaborate with the help of an example the concept of Primary key a
State the Steps of Object Design Object design is a very iterative process in which various classes, relationships among objects are added when you move from one level to
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