METHOD_LOG 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 "Log: method with object and indicator to messages" 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_METHOD_LOG TYPE METHOD_LOG.
The METHOD_LOG table consists of various fields, each holding specific information or linking keys about Log: method with object and indicator to messages data available in SAP. These include LOGLEVEL (Level for log of methods performed), METHOD (Method), OBJTYP (Object type), OBJIDINT (SAP internal object key)... 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. .