PAR40 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 "Personnel Record Infotype 0006 (Addresses) AR" 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_PAR40 TYPE PAR40.
The PAR40 table consists of various fields, each holding specific information or linking keys about Personnel Record Infotype 0006 (Addresses) AR data available in SAP. These include EMPLOYEENO (Personnel Number), SUBTYPE (Subtype), OBJECTID (Object Identification), LOCKINDIC (Lock Indicator for HR Master Data Record)... 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. .