STEV_EVWB 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 "Earned Value Data of Progress Analysis Workbench." 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_STEV_EVWB TYPE STEV_EVWB.
The STEV_EVWB table consists of various fields, each holding specific information or linking keys about Earned Value Data of Progress Analysis Workbench. data available in SAP. These include EVMET_TXT_P (Measurement method for PS progress analysis (plan)), EVMET_TXT_A (Measurement method in PS progress analysis (actual)), POC_PLN (Percentage of completion), POC_ACT (Percentage of completion)... 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. .