OSCommerce Product Manager

Add checking for data integrity and consistency:

* All prices follow non-zero policy.
* All stock follow non-negative policy.
* All products have image file.
* All image files actually exist.
* Product name are non-empty.
* Product description is non-empty.
* Product URL is non-empty.
* Category name is not empty.
* Manufacturer name is not empty.
* All currencies are greater than zero.
* Referenced manufactures exist.
* Referenced categories-products exist.
* Referenced tax-classes exist.
* Product descriptions are shorter or longer than...
* Product names are shorter or longer than...
* Product images are bigger or smaller (byte size) than...
* Product images are bigger or smaller (pixel size) than...
* Etc.

This checking could be done server-side. We could use a separate server-side script (this would be a separate product). The OSCPMWin application would then call the server-side script using a flat-answer parameter to direct the script in creating a machine-readable answer. Then the OSCPMWin application would parse and create a view for the user.