sharable database between devices : <p>i need a way for a phone to notify all other phones that hold the same application about a change, in my case i am trying to make a hotel booking app , i have managed to create a database and a table called hotels and filled with hotels but the problem is this kind of apps requires a connection between devices, so when i reserve a room in a device , it is also reserved in the other device , i was told i need the work with a server , can anyone give me a good link or something where a newbie like me ( never worked with servers before) to learn a bit thank you in advance</p>
