COML_SCHEME 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 "Screen Structure: Numbering Scheme" 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_COML_SCHEME TYPE COML_SCHEME.
The COML_SCHEME table consists of various fields, each holding specific information or linking keys about Screen Structure: Numbering Scheme data available in SAP. These include SCHEME_ID (Numbering Scheme), SCHEME_TEXT (Numbering Scheme Description), SCHEME_NUM_SEGMENTS (Number of Levels in a Numbering Scheme)... 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. .