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Learning SQLite for iOS

You're reading from  Learning SQLite for iOS

Product type Book
Published in Mar 2016
Publisher
ISBN-13 9781785288975
Pages 154 pages
Edition 1st Edition
Languages
Author (1):
Gene Da Rocha Gene Da Rocha
Profile icon Gene Da Rocha
Toc

Table of Contents (15) Chapters close

Learning SQLite for iOS
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
1. Introduction to SQL and SQLite 2. Database Design Concepts 3. Administering the Database 4. Essentials of SQL 5. Exposing the C API 6. Using Swift with iOS and SQLite 7. iOS Development with PhoneGap and HTML5 8. More Features and Advances in SQLite Index

Transactions and locks


Transactions and lock states form a part of the makeup of the API and its functions.

Although difficult to control in their entirety, locks and transactions are interlinked with queries within SQLite and most database systems. The key to better transactions involves the programmer writing good SQL code, ensuring that it will perform well, and catering for possible errors and issues during the journey so that the application does not crash or leave the user in the lurch. Another issue with locks will relate to which resources you need. Sometimes, it could be a badly written code that does not use autocommit or is holding an exclusive lock to a table and another part of your process, and you can't update it, as an example. So, it is very important for the programmer to gauge, learn the API, and understand how locking and transaction strategies will work to produce a smooth and good app.

By default, autocommit is used in SQLite where transactions cycles start and end, which...

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