SIMA_TEST_01 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 "OBSOLETE: Do Not Use" 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_SIMA_TEST_01 TYPE SIMA_TEST_01.
The SIMA_TEST_01 table consists of various fields, each holding specific information or linking keys about OBSOLETE: Do Not Use data available in SAP. These include SJAHR_VX (Year of loss), MJAHR_VX (Reporting Year)... 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. .