public DbObject(Context context) { dbHelper = new DictionaryDatabase(context); this.db = dbHelper.getReadableDatabase(); : Please Explain the given code , what does it means and how it works. 
Here "DictionaryDatabse" is class name in which DataBase Name and Version is defined. Ill be thankful to you cordly.

    public DbObject(Context context) {
        dbHelper = new DictionaryDatabase(context);
        this.db = dbHelper.getReadableDatabase();}

