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OpenStudy (anonymous):
What are the three levels of DBMS Architecture..?? Plz help me in detail..
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OpenStudy (anonymous):
External level Conceptual level Internal level
OpenStudy (anonymous):
Can u plz explain them in detail..!!
OpenStudy (anonymous):
Internal level describe how data is internally store in memory. External level is a abstract representation of data and based on views.e.g in a company employees ,manager have different views of database according to access authorities that they have. Conceptual level is a logical representation of database,what is stored and relationship among them . Conceptual level is used by DBA to control entire database.
OpenStudy (anonymous):
Thanks alott :)
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