1. The project of distributed system My hotel web page

2. Database

3. user-users can sign in or login this website and make orders. order-order table include userid and roomid. it can give the basic information for users who make this order and all managers to manage it. room-room table can give the roomid, the type(the room have been ordered by someone or not.),the cost for living and some short discription. manager-managers table have managerid used for managers in order to let them login as an administrater.

4. The page for login This is the page for users login:

5. The page for users This is the user`s page:

6. Transaction: Transaction processing is designed to maintain a database Integrity (typically a database or some modern filesystems) in a known, consistent state, by ensuring that interdependent operations on the system are either all completed successfully or all canceled successfully.[1] [1]come from wikipedia.

7. The code for transaction:

8. The End Thanks