IOrderedQueryable Represents the result of a sorting operation.

 IOrderedQueryable`1 Represents the result of a sorting operation.

 IQueryable Provides functionality to evaluate queries against a specific data source wherein the type of the data is not specified.

 IQueryable`1 Provides functionality to evaluate queries against a specific data source wherein the type of the data is known.

 IQueryProvider Defines methods to create and execute queries that are described by an object.