Summary
In this chapter, we have learned how to build data-driven apps and embed databases on mobile devices. We have looked at creating the database, building a data mapping layer, and building a GUI associated with it. Database access is a critical feature for most apps given that you cannot always rely on local files in various formats, like we saw in terms of JSON and XML earlier in the book. A database offers better-structured storage, in most cases. Also, a database can be the local cache of a remote database you can access using various techniques for building cloud clients or multi-tier architectures, which are the topics of the following chapters.
In the next chapter, we are going to reuse the visual part of our ToDo List app and use cloud data storage as the underlying implementation of the IToDoData interface.