Product Sub-Typing

Hi,

I am interested in opinions on the following,

main(product_id, short_text, price, type)
productTypes(type_id, type)
productTables(type_id, tableName)
productA(product_id, field1, field2)
productB(product_id, field1, field2)

To retrieve all products of type 'A', one must know the table name, in this case 'productA'.

Here is one method.

Create a table that contains the table name that corresponds to each product type, thus the stored procedure only needs to recieve the type_id which can be used to obtain the name of the respective table.