Hi Haider, your question is placed in wrong category i think. I take it as SQL question.

-- Your first stored procedure can be a function returning a table

CREATE FUNCTION somefunction

RETURNS TABLE

BEGIN

DECLARE @resultset TABLE

SET @resultset = SELECT * FROM SOMETABLE

return @resultset

END

-- Your second stored procedure

CREATE PROCEDURE someprocedure2

AS

BEGIN

DECLARE @resultset TABLE

SET @resultset = dbo.somefunction()

-- now use this resultset

END

the main difference between abstract class and interface is abstarct class can have method in it while interface does not have
more if you derive abstract class than it is not compulsory that you not need to create all the methods in the abstract class but if you implement interface than it is compulsory that you must have to implement all of its method.
in short abstract class must be derived else it is useless and interface must be implemented else it is useless