why we use entity framework

Entity Framework is an Object Relational Mapping (ORM). It is a bridge between domain object (business logic) and ---> RDBMS is Relational DataBases Management Systems that stores data as relational tables in spite of flat database are more flexible and structured.
EF provides an automated process to access (select) and maniplation (delete , insert, update) without writing too much code lines in Data Access Layer , in ADO.NET we had to write TSQL codes for everything we must do with DB { insert into table () values () } or {update table set field1=value1 ,...where ID=? } or {delete from table where ID=?}
Assume you have many feilds and you have to write code manually for each inserting deleting and updating so it takes so much time.


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FYI go trough below link

http://www.technical.cosmicverse.info/[^]

Entity frameworks offers two type of binding database first and code first, consider yourself you trapped in a situation where you don't know about the database you can use in future, so here is a solution "Code first approach", it is very simple and easy, also where it comes to maintaining or adding extra fields it is just awesome. Its comes handy when you are not sure about the things you are building and you keep changing the functionality.

I am not very sure it can efficiently handles huge database but for less records you can use entityframework