Download Core Data iOS Essentials by B.M.Harwani PDF

April 4, 2017 | Storage Retrieval | By admin | 0 Comments

By B.M.Harwani

Knowing middle information offers the choice of making data-driven iOS apps, and this publication is the ideal strategy to examine because it takes you thru the method of making a precise app with hands-on instructions.

Overview

  • Covers the basic abilities you wish for operating with middle info on your applications.
  • Particularly serious about constructing speedy, mild weight data-driven iOS applications.
  • Builds a whole instance program. each procedure is proven in context.
  • Completely functional with transparent, step by step instructions.

What you'll research from this book

  • Get an effective seize of what middle info is and the way it works
  • Build complete featured facts pushed purposes for iOS devices
  • Design acceptable info types to suit your app's needs
  • Make your app's facts simply searchable
  • Display your information in an enticing, versatile way

Approach

The ebook follows an unfolding instance app, exploring the gains and rules of middle information as they're extra to the app. The booklet is filled with step by step directions, transparent factors, and important fast reference material.

Who this publication is written for

If you've gotten already explored iOS improvement and perhaps even dabbled with middle info, this e-book will set your data-driven software improvement on an organization footing.

In Detail

Core facts is the fundamental aspect in information pushed iOS apps. it truly is used for storing, retrieving, and manipulating software info in databases, XML, and binary codecs. it is a vital part for iPhone, iPod contact, and iPad apps.

Core facts necessities presents a transparent, readable consultant to the main helpful elements of middle information. equipped round a pragmatic instance app, the booklet showcases an important points of center information improvement within the context of a whole, functioning app written in target C.

The e-book starts off with a travel of the way the app works. Then you will see how you can simply reveal information utilizing the desk View. you will enhance a suitable information version that matches the wishes of your app, then enforce that version as updatable facts items. you will see easy methods to replace information and construct relationships among gadgets and learn the way center information can paintings with seek, and the way to supply your clients with pleasant facts enhancing features.

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Extra info for Core Data iOS Essentials

Sample text

In such situations, faulting occurs and the data is retrieved from the store automatically. • Efficient database retrievals: Core Data queries are optimized for this, though the execution of query is dependent on the data store. • Multi-threading: Core Data supports multi-threading in an application, that is, more than one thread can be executed in parallel to increase performance. Even some tasks can be performed in the background using a separate thread. • Inverse relationship: Core Data maintains an inverse relationship for consistency.

If we add an object to a relationship, Core Data will automatically take care of adding the correct object to the inverse relationship. Also, if we remove an object from a relationship, Core Data will automatically remove it from the inverse relationship. In our application, we will be using an inverse relationship between the Customer and Product entities, so that if a customer is deleted, the information of all the products purchased by him/her should also be automatically deleted. [ 14 ] Chapter 2 • External data repositories: Core Data supports storing objects in external data repositories in different formats.

Once the Edit button is clicked, the button text changes to Save, the text fields are enabled, and we can modify the field data. After updating the master product's information, we save the changes by clicking on the Save button. After tapping the Save button, we will be returned to the view displaying the entire Master Products list, shown in the image (a). [ 28 ] Chapter 2 Deleting the Master Product The Edit button in the navigation bar shown in the next image (a) is used to remove an existing Master Product.

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