Why do we set the “Property” in stored procedure mapping in EF6

Question

I am a novice in EF6. I defined a SP with variables of the input type. In the SP specifies which variable is associated with which column. Then, why do we set the "Property" in stored procedure mapping? Differ?

Answer 1

Whats happening is that there is a mapping from the SQL type to the .NET type.

.NET has different types than SQL has.

You can find a list here .

The entity framework will handle the conversions for you.

Here's a part of the table:

SQL Server Database Engine type         .NET Framework type         SqlDbType 
-------------------------------------------------------------------------------
bigint                                 Int64                        BigInt        
binary                                 Byte[]                       VarBinary 
bit                                    Boolean                      Bit       
char                                   String                       Char      
date 1                                 DateTime                     Date 1        
datetime                               DateTime                     DateTime      
datetime2                              DateTime                     DateTime2

As for the naming of the property: EF has some (sometimes annoying) naming conventions.

More on that here: https://docs.microsoft.com/en-us/ef/ef6/modeling/code-first/conventions/built-in

And here: Database Naming Conventions by Microsoft?

Take special note to:

"Do not prefix stored procedures with sp_, because this prefix is reserved for identifying system-stored procedures."

https://blogs.msdn.microsoft.com/robcaron/2005/01/27/prefixing-stored-procedure-names-with-sp_/