How To Manage Sql Server Transaction In Desktop Networking Application Vb.net2005?

hi





i want to know that how to manage the sql server transaction in a

big desktop networking application?





for example





there are 200 tables in

database. many of that tables have relatationship. i have a form in

frontend which holds nere ablut 50 tables deffrent calculated amount. i

want to ADD, EDIT and DELETE, SAVE(commit), CANCEL(roll back) them and

same time another use will do the same work from another pc. if there

are 100 user does the same work (add, edit, delete, save, cancel) how

could i magage my sql server data???





i also want to know that





1 kind of

proffessionsl way to use sql server and vb.net?

2 what kind of septs to

develop a desktop networking application with sql server?

3 how i could

manage the transaction in sql server when there are many-many user

working in the same database(add, edit, delete, save-commit,

cancel-rollback).<img src="images/emoticons/smile_baringteeth.gif">