>>What would be the best way to make a software multi-companies. I use Stonefield Database Toolkit. Would SDT make things easier?
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>The Level Extreme Entertainment Package uses that to host a series of Web sites under the same database, same directory and same application. A field NoSite has been added in the related tables. So, basically, a field NoCompany could be added in the tables where it would apply.

How do you guaranty that application can see only data it suppose to see and cannot see other sites?