PAR09 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 "Welfare Fund" 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_PAR09 TYPE PAR09.
The PAR09 table consists of various fields, each holding specific information or linking keys about Welfare Fund data available in SAP. These include BUKRS (Company Code), BUTXT (Name of Company Code or Company), OBRAT (Welfare Fund name), PLANS (Welfare Fund plan)... 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. .