CIF_COMP 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 "PPM: Structure for Components" 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_CIF_COMP TYPE CIF_COMP.
The CIF_COMP table consists of various fields, each holding specific information or linking keys about PPM: Structure for Components data available in SAP. These include VORNR_EX (Operation Number), AKTNR_EX (Activity Number), LOGCOMP (Logical Component), METHOD (Method to be Executed During the Transfer of an Object)... 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. .