Book Image

Learning SQLite for iOS

By : Gene Da Rocha
Book Image

Learning SQLite for iOS

By: Gene Da Rocha

Overview of this book

The ability to use SQLite with iOS provides a great opportunity to build amazing apps. Apple's iOS SDK provides native support for SQLite databases. This combination offers the potential to create powerful, data-persistent applications. This book starts with the architecture of SQLite database and introduces you to concepts in SQL . You will find yourself equipped to design your own database system, administer it, and maintain it. Further, you will learn how to operate your SQLite databases smoothly using SQL commands. You will be able to extend the functionality of SQLite by using its vast arsenal of C API calls to build some interesting, exciting, new, and intelligent data-driven applications. Understand how Xcode, HTML5, and Phonegap can be used to build a cross-platform modern app which can benefit from all these technologies - all through creating a complete, customizable application skeleton that you can build on for your own apps.
Table of Contents (15 chapters)
Learning SQLite for iOS
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Transactions


A database transaction is a logical unit of work that contains several operations within. By definition, it will have four ACID properties: atomic, consistent, isolated, and durable.

A transaction must provide a sense of a full commitment to performing the work, or a way to rollback and not complete the work. It must also keep each transaction separate and isolated from the others, and ensure that transactions are completed, and information is written to the database. It must also reduce any amounts of database inconsistency and allow the best and proper way to recover from any failures.