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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
Explain the difference between using functions along with and without grouping attributes in relational algebra. Give examples. Ans: Group functions are used to group data of
To delete a particular column in a relation which command is used ? To delete a particular column in a relation ALTER command is used.
What are stored and derived attributes? Stored attributes: The attributes keeps in a data base are known as stored attributes. Derived attributes: The attributes that are de
What are the reasons for having variable length records? What are the various ways to store variable length records? Variable-length records arise in a database in various wa
Which operator is used to compare a value to a list of literals values that have been specified? BETWEEN operator is used to compare a value to a list of literals values that h
Explain the challenges before an E-business management.
The users who use easy-to-use menu are called ? The users who use easy to use menu are called as Naïve users.
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
Determine the Other System Design Issue How to realise subsystems; through hardware or software? How is object model mapped on chosen hardware software? Mapping
Explain the database Planning Project ?
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