![]() ![]() From that point on the author's code manipulates these Core Data objects, rather than the underlying vCards. ![]() They could then write standard Objective-C or Swift code to read vCard files and put the data into Core Data managed entities. Using Core Data the developer would drag their schema from the data designer in Xcode into an interface builder window to create a GUI for their schema. In order to manage these, the author intends to read the vCards into objects, and then store them in a single larger XML file. ![]() When combined with Cocoa bindings the UI can display many components of the data model without needing background code.įor example: a developer might be writing a program to handle vCards. The controller objects available in Interface Builder can retrieve and manipulate these entities directly. Code can retrieve and manipulate this data on a purely object level without having to worry about the details of storage and retrieval. Among other tasks, it handles change management, serializing to disk, memory footprint minimization and queries against the data.Ĭore Data describes data with a high level data model expressed in terms of entities and their relationships plus fetch requests that retrieve entities meeting specific criteria. Just as Cocoa Bindings handle many of the duties of the controller in a model–view–controller design, Core Data handles many of the duties of the data model. Core Data interfaces directly with SQLite, insulating the developer from the underlying SQL. Core Data manages the serialized version, providing object lifecycle and object graph management, including persistence. The data can be manipulated using higher level objects representing entities and their relationships. It allows data organized by the relational entity–attribute model to be serialized into XML, binary, or SQLite stores. #Core data lab mac os x#It was introduced in Mac OS X 10.4 Tiger and iOS with iPhone SDK 3.0. Apple Developer Core Data Programming GuideĬore Data is an object graph and persistence framework provided by Apple in the macOS and iOS operating systems. ![]()
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