ABAP Keyword Documentation → ABAP Glossary
Index
Selected columns of a database table that are sorted in order and stored as a copy in the database system, and which refer to the actual lines. For the database tables of an ABAP-based SAP system AS ABAP that are defined in the ABAP Dictionary, there is always a primary index, and additional secondary indices can also be created. For internal tables there may be a table index.