code: public void delete(Article article) {
  		SQLiteDatabase db = this.getWritableDatabase();
  		db.delete(TABLE_ARTICLES, KEY_ID + " = ?", new String[] {String.valueOf(article.getId())});
  		db.close();
  	}
docs: Removes a specified Article from this database based on its ID value.
  @param article Article to remove. May contain dummy data as long as the id is valid.