HEAD19 is a standard SAP Structure so does not store data like a database table does. It can be used to define the fields of other actual tables or to process "Reactivated structure to read in 2.2 archive prod. order" Information within sap ABAP programs. This is done by declaring abap internal tables, work areas or database tables based on this Structure. These can then be used to store and process the required data appropriately. i.e. DATA: wa_HEAD19 TYPE HEAD19.
The HEAD19 table consists of various fields, each holding specific information or linking keys about Reactivated structure to read in 2.2 archive prod. order data available in SAP. These include TDOBJECT (Texts: Application Object), TDNAME (Name), TDID (Text ID), TDSPRAS (Language Key)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .