PARTY_DATE_TIME 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 "Business Partner: Data-type for date format" 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_PARTY_DATE_TIME TYPE PARTY_DATE_TIME.
The PARTY_DATE_TIME table consists of various fields, each holding specific information or linking keys about Business Partner: Data-type for date format data available in SAP. These include UPDATE_INDICATOR (Indicator whether an element carries an updated value or not), VALUE (Proxy: Zeitstempel)... 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. .