From OpenSCADAWiki
Data of storehouse of the corresponded class stores in different table with name "sh_{CLASS}" and the structure "ID, NAME, DSCR, SP_{ID}1, ..., SP_{ID}N", where:
- ID [INT] — automatic index of the table, allowed for change the visibility;
- NAME [varchar(200)] — name of the item, allowed for change the type;
- DSCR [text] — description of the item;
- SP_{ID}X — specific field of the class corresponding to ID in the class table.