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Define DBA database administrator?
DBA: A database administrator (DBA) is a person who is responsible for the environmental aspects of a database. In common, these involves:
Recoverability - Creating and testing Backups Integrity - Verifying or helping to verify data integrity Security - Defining and/or implementing access controls to the data Availability - Ensuring maximum uptime Performance - Ensuring maximum performance Development and testing support - Helping programmers and engineers to economically utilize the database
what is the need of a log in dbms
Views A view is like a window by which data from tables can be changed or viewed. The table on which a view is based is known as Base table. The view is stored as a SELECT stat
how draw er diagram
Atomicity: It describes a transaction to be a one unit of processing. We can also say either a transaction will be finished completely or not at all. In the transaction example 1
Explain the function of Object model Object model describes the classes of objects in system, including their attributes and operations which they support. The analysis object
What is a trigger
explain exhaustively the problems associated with ER diagrams. include illustrations in your answer
domain
complete er diagram of textile industry management
Which database object does not physically exist? A view database object does not physically exist.
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