Как организовать класс для работы с несколькими таблицами

private class DbOpenHelper extends SQLiteOpenHelper{
 
        public DbOpenHelper(Context context, final String DB_NAME, SQLiteDatabase.CursorFactory factory, int version) {
            super(context, DB_NAME, factory, version);
        }
 
        @Override
        public void onCreate(SQLiteDatabase db) {
            final String CREATE_TABLE = "CREATE TABLE IF NOT EXISTS " + FIRST_TABLE_NAME + " ( _id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, " + FIRST_WORD + " TEXT, " +
                    SECOND_WORD + " TEXT, " + CORRECT_FIRST_WORDS + " INTEGER, " + CORRECT_SECOND_WORDS + " INTEGER, " + FIRST_COMMENT + " TEXT, " + SECOND_COMMENT + " TEXT )";
            db.execSQL(CREATE_TABLE);
        }
 
        @Override
        public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
            final String DROP_TABLE = "DROP TABLE IF EXISTS " + FIRST_TABLE_NAME ;
            db.execSQL(DROP_TABLE);
            onCreate(db);
        }
    }

private class DbOpenHelper extends SQLiteOpenHelper{
 
        public DbOpenHelper(Context context, final String DB_NAME, SQLiteDatabase.CursorFactory factory, int version) {
            super(context, DB_NAME, factory, version);
        }
 
        @Override
        public void onCreate(SQLiteDatabase db) {
            final String CREATE_TABLE = "CREATE TABLE IF NOT EXISTS " + FIRST_TABLE_NAME + " ( _id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, " + FIRST_WORD + " TEXT, " +
                    SECOND_WORD + " TEXT, " + CORRECT_FIRST_WORDS + " INTEGER, " + CORRECT_SECOND_WORDS + " INTEGER, " + FIRST_COMMENT + " TEXT, " + SECOND_COMMENT + " TEXT )";
            db.execSQL(CREATE_TABLE);
 
        final String CREATE_SECOND_TABLE = "CREATE TABLE IF NOT EXISTS " + SECOND_TABLE_NAME + " ( _id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, " + FIRST_WORD + " TEXT, " +
                    SECOND_WORD + " TEXT, " + CORRECT_FIRST_WORDS + " INTEGER, " + CORRECT_SECOND_WORDS + " INTEGER, " + FIRST_COMMENT + " TEXT, " + SECOND_COMMENT + " TEXT )";
            db.execSQL(CREATE_TABLE);
        }
 
        @Override
        public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
            final String DROP_TABLE = "DROP TABLE IF EXISTS " + FIRST_TABLE_NAME ;
            db.execSQL(DROP_TABLE);
 
            final String DROP_TABLE = "DROP TABLE IF EXISTS " + SECOND_TABLE_NAME ;
            db.execSQL(DROP_TABLE);
            onCreate(db);
        }
    }