ADO and SQL Server

. The index propertie reference about BD index or to one recordset index?

. How do I for make use index defined in the bank?

. How work index lock?

. In truth, LockopenbatchUpdate & updateBatch work well?

. Suppose I have one Record Set with three records and the pointer is on the second record. In this situation I do update method, what occurs: all 'Record Set' will be made in the bank or only second record will?