Dependency of deleting Sales History over other Demantra tables

Hi All

We are on our way to close down few plants and warehouses as per business resizing decision. Accordingly, we need to delete the sales history ( internal orders) for these warehouses and plants from the demantra database so that going forward we can have more accurate forecasts.

We know that sales data table will be our target for this purge. However, is there a documentation available somewhere which explains the dependency of sales table data over other tables in demantra? Precisely, if we want to delete some history data from sales table, then associated data from what all other tables (demantra) also need to be deleted?