2017-03-27

Updates to Swift 3 and other improvements to the Core Data framework.

2016-09-13

Updated swift examples

2015-09-17

Significant update and rewrite of the guide to reflect current best practices and APIs.

2014-07-15

Updated various sections.

2014-03-10

Corrected Scalar Value Constraints section in Non-Standard Persistent Attributes. Custom structures other than NSPoint, NSSize, NSRect, and NSRange may be key-value coding and key-value observing compliant, and therefore may be supported by Core Data.

2012-09-19

Removed reference to obsolete document.

2011-08-03

Removed references to a legacy document.

2010-11-15

Added a note re creating stores offline in the FAQ.

2009-11-17

Corrected example implementation of scalar value accessor methods; revised Faulting and Uniquing article.

2009-10-19

Incorporated editorial changes.

2009-08-25

Corrected typographical errors.

2009-06-04

Added discussion of using NSExpressionDescription to retrieve specific values.

2009-02-26

First release of this document for iOS.

2008-11-19

Enhanced discussion of managing undo operations.

2008-02-08

Enhanced the discussions of legacy data importing and memory management.

Added a discussion of many-to-many relationships in Relationships and Fetched Properties.

2007-12-11

Corrected typographical errors.

2007-10-31

Updated for OS X v10.5. Made several minor enhancements.

2007-08-23

Enhanced memory management article; noted that NSManagedObject subclasses do not use all accessor methods with mutableSetValueForKey:.

2007-07-16

Enhanced discussion of threading options; added note about constraints of use of relationship accessor methods.

2007-03-15

Noted the file systems supported by the SQLite store.

2007-02-08

Clarified the behavior of entity inheritance in fetching; split "Managed Object Models" into two articles.

2007-01-08

Updated FAQ, "Memory Management Using Core Data", and "Core Data and Cocoa Bindings".

2006-12-05

Added a discussion of faulting and KVO notifications to "Faulting and Uniquing."

2006-11-09

Enhanced discussion of accessing and modifying properties and of creating and initializing managed objects.

2006-10-03

Enhanced the discussion of copying managed objects.

2006-09-05

Enhanced troubleshooting and multi-threading articles; incorporated validation article.

2006-07-24

Made minor revisions to "Persistent Stores."

2006-06-28

Corrected minor typographical errors.

2006-05-23

Added links to sample code and detail to the section on copy and paste.

2006-04-04

Added section on fetch request templates to Managed Object Models. Enhanced description of managed object lifecycle.

2006-03-08

Enhanced "Change Management" and "Faulting and Uniquing" articles; clarified meaning of SQLite debugging flag.

2006-02-07

Added notes about SQL logging to "Fetching Managed Objects" and about test-driven development to "Versioning."

2006-01-10

Added a new, preliminary article on threading. Added a new article, "Managed Objects," taken mainly from the NSManagedObject API reference.

2005-12-06

Augmented the articles "Faulting and Uniquing" and "Persistent Stores."

2005-11-09

Added article on importing legacy files.

2005-10-04

Corrected various minor typographical errors.

2005-09-08

Added new articles to describe managed object models and versioning.

2005-08-11

Added articles on memory management and fetching managed objects. Streamlined the introduction to "Managed Object Accessor Methods."

2005-07-07

Corrected various minor typographic errors, made several clarifications. Added article on Troubleshooting.

2005-06-04

Added article on managed object accessor methods. Corrected method listings in "Non-Standard Attributes" article; other minor enhancements.

2005-04-29

Update to include discussion of relationship manipulation, and enhancement to discussion of memory management.

Updated for public release of OS X v10.4. Changed title from "Core Data." First public version.