We have started this book sitting in a virtual airplane that is now flying us over Xamarin Mobile Multiplatform Development. It's time to look down a little bit and view the map of the land that we are going to visit every time we make a new app.
One common thing about each app that we develop is that, at some point, we will need to write and read data.
Unfortunately, when we work with mobile phones we cannot trust the network and we cannot have a full-time communication with a central SQL server. This means that we need to find a way to save data locally and then synchronize it with the server as soon as we've got connectivity.
In this chapter, we will explore how to design and develop an architecture that allows us to work with and manage local data.