Sometimes you need to store structure data locally in your application. It is possible to use the persistence data solutions in Android and iOS as well, but if you are familier or what to have complex relational solution in your apps, than the best solution can be to implement the SQLite solution.
SQLite does not require a server backend, so you can have the relational database solution embedded into your application directly.
In this tutorial you can see, how to implement the database and how you can debug the failures or model the database before the implementation into your app.
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