,Core Data by Tutorials
Core Data by Tutorials Fifth Edition
Aaron Douglas, Matthew Morey and Pietro Rea
Copyright ©2018 Razeware LLC.
Notice of Rights
All rights reserved. No part of this book or corresponding materials (such as text,
images, or source code) may be reproduced or distributed by any means without prior
written permission of the copyright owner.
Notice of Liability
This book and all corresponding materials (such as source code) are provided on an "as
is" basis, without warranty of any kind, express of implied, including but not limited to
the warranties of merchantability, fitness for a particular purpose, and
noninfringement. In no event shall the authors or copyright holders be liable for any
claim, damages or other liability, whether in action of contract, tort or otherwise,
arising from, out of or in connection with the software or the use of other dealing in the
software.
Trademarks
All trademarks and registered trademarks appearing in this book are the property of
their own respective owners.
raywenderlich.com 2
,Core Data by Tutorials
Dedications
"To my husband, Mike, who puts up with all my weird quirks and
supports all the things I do."
— Aaron Douglas
"To my amazing wife Tricia and my parents — Thanks for always
supporting me."
— Matthew Morey
"To my wonderful wife Emily, my daughter Rose, and my parents.
Thank you for always supporting me every step of the way."
— Pietro Rea
raywenderlich.com 3
, Core Data by Tutorials
About the Authors
Aaron Douglas was that kid taking apart the mechanical and
electrical appliances at five years of age to see how they worked. He
never grew out of that core interest — to know how things work. He
took an early interest in computer programming, figuring out how to
get past security to be able to play games on his dad's computer. He's
still that feisty nerd, but at least now he gets paid to do it. Aaron's
interest in mobile software has been ever increasing since he got his
first iOS app in Apple's App Store in 2009, Migraine Diary. He is with
Automattic (WordPress.com, Akismet, SimpleNote) as a Mobile
Maker. Other than software development, Aaron enjoys camping
during the summer, taking his dogs for a walk around the
neighborhood, and pretending to be a storm chaser while sitting at
home. Follow him on Twitter as @astralbodies and on his blog
at https://aaron.blog.
Matthew Morey is an engineer, author, hacker, creator and tinkerer.
As an active member of the iOS community and CTO at MJD
Interactive he has led numerous successful mobile projects
worldwide. When not developing apps he enjoys traveling,
snowboarding, and surfing. He blogs about technology and business
at matthewmorey.com.
Pietro Rea is a senior software engineer at Upside Travel in
Washington D.C. Pietro's work has been featured in the App Store
across several categories: media, e-commerce, lifestyle and more.
Having worked at Fortune 500 companies and venture-backed
startups, Pietro has a passion for building apps users can't live
without. You can find Pietro on Twitter as @pietrorea.
raywenderlich.com 4
Core Data by Tutorials Fifth Edition
Aaron Douglas, Matthew Morey and Pietro Rea
Copyright ©2018 Razeware LLC.
Notice of Rights
All rights reserved. No part of this book or corresponding materials (such as text,
images, or source code) may be reproduced or distributed by any means without prior
written permission of the copyright owner.
Notice of Liability
This book and all corresponding materials (such as source code) are provided on an "as
is" basis, without warranty of any kind, express of implied, including but not limited to
the warranties of merchantability, fitness for a particular purpose, and
noninfringement. In no event shall the authors or copyright holders be liable for any
claim, damages or other liability, whether in action of contract, tort or otherwise,
arising from, out of or in connection with the software or the use of other dealing in the
software.
Trademarks
All trademarks and registered trademarks appearing in this book are the property of
their own respective owners.
raywenderlich.com 2
,Core Data by Tutorials
Dedications
"To my husband, Mike, who puts up with all my weird quirks and
supports all the things I do."
— Aaron Douglas
"To my amazing wife Tricia and my parents — Thanks for always
supporting me."
— Matthew Morey
"To my wonderful wife Emily, my daughter Rose, and my parents.
Thank you for always supporting me every step of the way."
— Pietro Rea
raywenderlich.com 3
, Core Data by Tutorials
About the Authors
Aaron Douglas was that kid taking apart the mechanical and
electrical appliances at five years of age to see how they worked. He
never grew out of that core interest — to know how things work. He
took an early interest in computer programming, figuring out how to
get past security to be able to play games on his dad's computer. He's
still that feisty nerd, but at least now he gets paid to do it. Aaron's
interest in mobile software has been ever increasing since he got his
first iOS app in Apple's App Store in 2009, Migraine Diary. He is with
Automattic (WordPress.com, Akismet, SimpleNote) as a Mobile
Maker. Other than software development, Aaron enjoys camping
during the summer, taking his dogs for a walk around the
neighborhood, and pretending to be a storm chaser while sitting at
home. Follow him on Twitter as @astralbodies and on his blog
at https://aaron.blog.
Matthew Morey is an engineer, author, hacker, creator and tinkerer.
As an active member of the iOS community and CTO at MJD
Interactive he has led numerous successful mobile projects
worldwide. When not developing apps he enjoys traveling,
snowboarding, and surfing. He blogs about technology and business
at matthewmorey.com.
Pietro Rea is a senior software engineer at Upside Travel in
Washington D.C. Pietro's work has been featured in the App Store
across several categories: media, e-commerce, lifestyle and more.
Having worked at Fortune 500 companies and venture-backed
startups, Pietro has a passion for building apps users can't live
without. You can find Pietro on Twitter as @pietrorea.
raywenderlich.com 4
