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What are the Issues when Selecting a Database
Issues when Selecting a Database
How external/conceptual mapping and conceptual /internal mapping is performed
What is schema
What three major types of actions includes databases? Briefly discuss these The three major types of actions including databases are: (i) Defining: It includes specifyin
What are the two types of indices? The two types of indices are:- A) Dense index B) Sparse index
The ER diagram clearly showing the additional tables you have implemented. SQL table creation scripts for the tables you have set up. SQL scripts showing the sample data you
a set of possible data value of an attribute is called??
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
What is NULL? Simply NULL means not in value.
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
Give some encryption techniques? A) DES B) AES C) Public key encryption
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