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How to reduce data redundency
What is a relationship called when it is maintained between two entities? A relationship is called Binary relationship when it is maintained between two entities.
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
Optimistic Concurrency Control Is locking the only way to stop concurrency related problems? There exist some other ways too. One such way is known as an Optimistic Concurrency
Un-Normalized Form (UNF) If a table having non-atomic values at every row, it is said to be in UNF. An atomic value is something that cannot be further decomposed. A non-atomic
What is a Name? A user-supplied name is used for identity. This form of identity is used for files in file systems. The user gives every file a name that uniquely identifies it
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 is Foreign Key Foreign Key: Sometimes we may have to work with an attribute that does not have a primary key of its own. To recognize its rows, we have to use the primar
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
Consistency error : These errors happen due to the inconsistent state of database caused may be due to wrong implementation of commands or in case of a transaction abort. To overc
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