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What is Distributed system ?
Distributed System - A distributed system consists of a number of processing parts in which are interconnected through a computer network and in which cooperate in performing certain assigned tasks.
Suppose R is a relation with attributes A1, A2,..., An. As a function of n, tell how many superkeys R has, if: 1.1 The only key is A1. 1.2 The only key is A1 and A2. 1.3 The o
Question 1 Explain the 10 reasons to use MySQL Question 2 Write the SQL statements to demonstrate the following using SELECT command Expression Evaluation ORDER BY
how to prepare a data dictionary for online examination system for certified courses?
what are information system hirarchy?
Define the Boyce-Codd Normal Form with instance and also Compare BCNF and 3NF. Ans: BCNF: For each functional dependency X->Y in a set F of functional dependencies over relati
To delete a particular column in a relation which command is used ? To delete a particular column in a relation ALTER command is used.
Which language has presently become the defacto standard for interfacing application programs along with relational database system? The language which has recently become the
Which is a valid SQL type? A valid SQL Should be in CHARACTER it is should be NUMERIC and FLOAT.
How many levels can be viewed in Architecture of the database ? Architecture of the database can be viewed as three levels.
What is NULL? Simply NULL means not in value.
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