The code/logic for each tab is going to be quite different. All the tabs will be operating off of the same database connection, but each tab will be centered around a different purpose.(different tables/areas of the database)

I'll have some administrative tabs which I'll use to update(or add/remove) items in the database, and then more tabs which will be centered around either reporting(generated on tab load) or a near real-time(refreshed) view of the data. Its basically an admin GUI - make a configuration changes on one tab, then click a few tabs over to wait for a visible effect resulting from your changes. Other than the database connection I don't think the tabs will share much code/logic.