<ul><li>The given is an implementation of a restaurant app in Android Studio with a SQLite database.</li><li>The app allows the user to select categories and items, and displays the price of the selected item.</li><li>The total cost of the selected items is updated when the 'Add Item' button is clicked and displayed in the SummaryActivity.</li><li>The database contains tables for categories and items, with example data being prepopulated on app creation.</li></ul>

Guide on Database in Android Studio

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