Dear
Friends
I am Aryan Singh Negi
Today we will talk about
The Various Levels Of Database Implementation
.
The database is implemented through three general levels :-
1)Internal
.
2)Conceptual
.
3)External
.
Now let's Discuss more about these 3
.
1)Internal Level(Physical Level )
.
:-The Lowest level of abstraction,the internal level, is the one closest to physical storage.
This level is also sometimes termed as physical level.
.
2)Conceptual Level
.
:-This Level Of Abstraction describes what data are actually stored in the database.It also describes the relationship existing among data.
.
3) External Level (View Level)
.
This is the level closest to the users and is concerned with the way in which the data are viewed by individual users.
That's all
There is the little info about databases
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