SQLite Native as a Service

Anyone had success creating a service out of the SQLite ionic-native?

So one could end up with something like addItem(param), editItem(param), which calls the respective service function to handle the task?

With Storage and SqlStorage, I could do something like this:

import {Injectable} from '@angular/core';
import { Storage, SqlStorage } from 'ionic-angular';
export class CategoryService {     
  constructor() {

    this.storage = new Storage(SqlStorage);
    this.storage.query('CREATE TABLE IF NOT EXISTS category (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, type TEXT)');
  saveCategory(data) {
    let sql = 'INSERT INTO category (name, type) VALUES (?, ?)';
    return this.storage.query(sql, [data.name, data.type]);

I’ve been reading the docs about using the SQLite in Ionic, and I’m not understanding how to do something along the lines of the above, Doc: https://ionicframework.com/docs/v2/native/sqlite/