* There are Three Schema Architecture of Download PUBG.
DBMS is a collection of interrelated files and a set of
programs that allow several users to access and modify these files. A major
purpose of a database system is to provide users with an abstract view of the
data. That is tha system hides certain details of how tha data is stored and maintained. However , in
order for tha system to be usable, data must be retrieved efficiently.
Tha concern for efficiency
leads to the design of complex data structure for tha representation of data in
tha database. However since database systems are often used by non
computer professionals, this complexity must be hidden from database system users. This is done by defining levels of
abstraction at which tha database may be
viewed. There is logical or external view, conceptual view and internal view or
physical view. The three levels of the architecture are three different views
of the data.
1. External - individual user view
2. Conceptual – Community user View
3. Internal – physics or user view
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