Skip to main content

Introduction to Entity Framework

Entity Framework is an object-relational mapper (O/RM) that enables .NET developers to work with a database using .NET objects. It eliminates the need for most of the data-access code that developers usually need to write.
 It enables developers to work with data using objects of domain specific classes without focusing on the underlying database tables and columns where this data is stored.
It eliminates the  ADO.NET code that we write to connect to Database,Execute Query and read data from DataSet and convert to .net objects and vice versa.

 It Reduces the pain of developers and provides higher level of abstraction for faster development of .net applications.
Labels:

Comments

Post a Comment

Popular posts from this blog

Using SqlDataAdapter to fill DataTable in c#

public DataTable List(string sql)         {             SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString);             SqlCommand cmd = new SqlCommand(sql, con);             DataTable dt = new DataTable();             SqlDataAdapter da = new SqlDataAdapter(cmd);             try             {                              con.Open();                 da.Fill(dt);             }             finally             {                 con.Close();             }             return dt;         }
Post a Comment
Read more

Pivot in Oracle for Dynamic Columns

Pivot in SQL refers to the change of rows into columns based on specific constraints. An example of pivot could be the transpose of matrix. Example: a matrix containing day as 1st row and sales as 2nd row for  specific day sun    10 mon  20 tue    30 The transpose of the above matrix would be sun mon tue 10  20  30 This is an example scenario of pivot in sql. Now, Lets get on to the actual tables in database and see how we can use pivot . Starting with a fictional scenario, assume a table which contains two columns DAYS and SALES. CREATE TABLE TEST.DAILY_SALES (   DAYS   VARCHAR2(10),   SALES  NUMBER ) insert into DAILY_SALES('SUN',10); insert into DAILY_SALES('MON',20); insert into DAILY_SALES('TUE',15); insert into DAILY_SALES('WED',25); insert into DAILY_SALES('THU',10); insert into DAILY_SALES('FRI',30); insert into DAILY_SALES('SAT',5); Now when we execute the following select statement se
Post a Comment
Read more