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To delete a particular column in a relation which command is used ?
To delete a particular column in a relation ALTER command is used.
a need some real life examples of database management systems three level of ANSI SPARC architecture life teacher and student ,company and employee or for NGO etc.
One-way Associations If an association is only traversed in single direction, then it is known as one-way association. It is implemented as a pointer or an attribute which con
Can a filed occur in several field groups. Yes. But it leads to redundant data redundancy.
What Command You Use What Day of the week were you born
Process-oriented decompositions Process-oriented decompositions divide complex process, task or function into simpler sub processes until they get simple enough to be deal
Indexed (Indexed Sequential) File Organisation It organises the file like a big dictionary, i.e., records are kept in order of the key but an index is stored which also allows
Components of database manager The above functions are reached by the database manager. The major elements of a database manager are: Authorisation control: This mod
Explain concurrency control? Concurrency control Oracles multiversion concurrency control varies from the concurrency mechanism used by some other data base vendors. Read
explain participation constraints with examples
Hi is anyone well versed in accounting information systems available now to help me work through an important assignment due tomorrow at noon?
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