Description of TTableCopy :
TTableCopy's main purpose is to transfer data to a table whose structure has changed.The component copies records from a source dataset (S) to a destination dataset (D). It does not alter the records of S or the structure of D. D must exist prior to the implementation of TTableCopy. It is assumed that S and D share similar fields. However D may have fields that do not exist in S (they will remain NULL) or S may have fields that do not exist in D (they will not be copied). TTableCopy looks for matching fields in S and D. If no matches are found, no records are transfered. If matches are found, TTableCopy copies the matching fields from S to D for all records contained in S.