@Override
    public void onUpgrade(SQLiteDatabase sqLiteDatabase, int oldVersion, int newVersion) {
        // This database is only a cache for online data, so its upgrade policy is
        // to simply to discard the data and start over
        // Note that this only fires if you change the version number for your database.
        // It does NOT depend on the version number for your application.
        // If you want to update the schema without wiping data, commenting out the next 2 lines
        // should be your top priority before modifying this method.
        sqLiteDatabase.execSQL("DROP TABLE IF EXISTS " + LocationEntry.TABLE_NAME);
        sqLiteDatabase.execSQL("DROP TABLE IF EXISTS " + WeatherEntry.TABLE_NAME);
        onCreate(sqLiteDatabase);
    }
Manages a local database for weather data.
app/src/main/java/com/example/android/sunshine/app/data/WeatherDbHelper.java