p.p1 database administrator, known as DBA , Who has

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Database administrator :

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             A database administrator, known as DBA , Who has to maintain the data of the  organization and provide security to the DB. This position in organization requires an skills on RDBMS and also strong skills on data base quires.
The DB runs on the hardware platform so DBA should also known the installations and commands also.
We Have Different Types Of DBA In Realtime :

Administrative DBA: keeps up the servers and databases and keeps them running. Stressed over fortifications, securities, patches and replications. Main activity is to maintaining the database and s/w program, but not really in developing. 

Development DBA: Person who works mostly on building SQL queries, stored procedures. This is like a programmer but should concentrate on SQL.Hw should also known the DBA.

Data architect: Architect who built the frame of the entire project and provides the problems to the solutions and and guides the his team.

Data warehouse DBA:The Data Warehouse DBA is who collects the all data and merges into one single files and resizes it.And also he will use some tools to clean up data and for also synchronization.