SAP NetWeaver AS ABAP Release 740, ©Copyright 2014 SAP AG. All rights reserved.
ABAP Keyword Documentation → ABAP − Reference → Processing External Data →
Data Clusters
A data cluster is a group of data objects grouped together for the purpose of storage in a storage medium that can only be edited using ABAP statements.
The statements for data clusters are complemented by the subclasses of the abstract system class CL_ABAP_EXPIMP_UTILITIES.
Note
As well as the statements described here, some obsolete accesses to data clusters also still exist.