A DASDL update compilation now accepts changes made to any structure. A REORGANIZE clause is no longer required in front of each reorganized structure. The DASDL compiler determines the changes that have been made to the reorganized structure. Though the REORGANIZE clause is no longer necessary, the old syntax is still valid. If used, however, a warning message is issued to indicate that the REORGANIZE clause is not needed. In addition, if a REORGANIZE clause appears in front of a structure, the structure is treated as a reorganized structure even if no changes were made.