Understanding: EDM

The EDM is the entity Data Meta, first of all to understand what entity is.

Entity It is a framework, used in C #, to facilitate the invocation of SQL data, and for OData calls. I don't know the details!

The EDM is basically a data structure that indicates a SQL, such as: all the properties of the table, the relationship between the table and the table.

In the project, the EDM is loaded into the Web page by the user, in order to be able to pass DB when the router UI resolve begins preparing to send an HTTP request. xx The Async tool goes to the EDM to construct the URL with the SQL structure so that a full URL can be obtained to request HTTP.

*EDM will turn into an XML format to come to the foreground.

Understanding: EDM