Android Tutorial Using Procedure in rdc Server

Hello Every Who can not know to use procedure with rdc there are two ways To do that

the first one is use Call keyword like this

sql.getcategoryproducts=Call Getprodbycat(?)

this way work prefect with some database engine but not all

the second one is use Exec keyword like this

sql.getcategoryproducts=Exec Getprodbycat ?   ' without use  Arches

the second way work also prefect with some database engine like sql server

I use it and work prefect with me