EQUI_INSTALL_DATA 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 "PM: Installation-/Dismantling Information Including Times" 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_EQUI_INSTALL_DATA TYPE EQUI_INSTALL_DATA.
The EQUI_INSTALL_DATA table consists of various fields, each holding specific information or linking keys about PM: Installation-/Dismantling Information Including Times data available in SAP. These include HEQUI (Superordinate Equipment), DATDN (Date on which installation location of equipment was changed), UZTDN (Time at which the InstallLoc of the equipment was changed)... 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. .