DIMHIO 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 "Call Objects from Maintenance Plan for Logical Database" 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_DIMHIO TYPE DIMHIO.
The DIMHIO table consists of various fields, each holding specific information or linking keys about Call Objects from Maintenance Plan for Logical Database data available in SAP. These include MANDT (Client), WARPL (Maintenance Plan), ABNUM (Maintenance Plan Call Number), WPPOS (Maintenance item)... 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. .