If you have already parsed the Dictionary and need to re create all SQL tables then using this option will do so for you.
All the SQL scripts are saved in a TPS table named "Dmc_Dctx_TableSqlScripts.tps" and after selecting your source DCTX file DMC will loop on each record contained in this table and execute it, thus dropping any existing SQL table to CREATE it as a NEW table.
This option can only be selected alone.