MDST_SYNC_SOURCE_PARAMETER 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 "Control Parameters for Data Extraction for Source Object" 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_MDST_SYNC_SOURCE_PARAMETER TYPE MDST_SYNC_SOURCE_PARAMETER.
The MDST_SYNC_SOURCE_PARAMETER table consists of various fields, each holding specific information or linking keys about Control Parameters for Data Extraction for Source Object data available in SAP. These include EXTRACT_CLASS (Extractor Class for Synchronization 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. .