SQLite is a powerful, embedded relational database management system in a compact C library, developed by D. Richard Hipp. It offers support for a large subset of SQL92, multiple tables and indexes, ...
Don't be afraid of using your chosen database's command-line client. I might as well say this up front: I don't like using GUI (aka non-command-line or graphical) tools with my databases. This is ...
Before Google I/O 2017, Google avoided recommending any particular architecture for Android development. You could use Model View Presenter (MVP), Model View Controller (MVC), Model-View-ViewModel ...