All business / data rules go into and are enforced by, the database. This was learned the hard way: creative sales people manipulating sales data (via ODBC & E

All business / data rules go into and are enforced by, the database. This was learned the hard way: creative sales people manipulating sales data (via ODBC & Excel on NT3.51 no less). Since all logic was in the applications, they had a field day when they bypassed those. This was 1996. Not much has changed.