CoreData

Persistence Stack 4

The container and coordinator objects that set up and manage your app's Core Data store.

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  NSPersistentContaineriOS 10.0+

  An object that encapsulates the Core Data stack, including the model, coordinator, and contexts.
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  NSPersistentCloudKitContaineriOS 13.0+

  A container that mirrors a Core Data store to CloudKit to sync data across a user's devices.
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  NSPersistentStoreCoordinatoriOS 3.0+

  An object that mediates between managed object contexts and the persistent stores they use.
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  NSPersistentStoreDescriptioniOS 10.0+

  An object that describes the configuration and options for a persistent store to be added.

Managed Object Model 16

Types that describe your schema's entities, attributes, relationships, and indexes.

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  NSManagedObjectModeliOS 3.0+

  An object that describes an app's schema as a collection of entities and their relationships.
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  NSManagedObjectModelReferenceiOS 17.0+

  A reference to a managed object model identified by name and version checksum for staged migration.
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  NSEntityDescriptioniOS 3.0+

  An object that describes an entity, including its attributes, relationships, and managed object class.
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  NSManagedObjectIDiOS 3.0+

  A compact, persistent identifier that uniquely references a managed object within a store.
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  NSPropertyDescriptioniOS 3.0+

  The abstract base class describing a property of an entity, such as an attribute or relationship.
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  NSAttributeDescriptioniOS 3.0+

  An object that describes a single attribute of an entity in a managed object model.
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  NSCompositeAttributeDescriptioniOS 17.0+

  An object that describes an attribute composed of several underlying attributes within an entity.
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  NSDerivedAttributeDescriptioniOS 13.0+

  An object that describes an attribute whose value is computed from an expression over other properties.
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  NSRelationshipDescriptioniOS 3.0+

  An object that describes a relationship between two entities in a managed object model.
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  NSFetchedPropertyDescriptioniOS 3.0+

  An object that describes a property whose value is the result of a fetch request over related objects.
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  NSExpressionDescriptioniOS 3.0+

  A property description that represents a computed value derived from an expression in a fetch request.
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  NSFetchIndexDescriptioniOS 11.0+

  An object that describes a fetch index defined on an entity to speed up queries.
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  NSFetchIndexElementDescriptioniOS 11.0+

  An object that describes a single property and collation of a fetch index.
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  NSAttributeType

  Constants that identify the data type of an attribute, such as string, integer, or date.
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  NSFetchIndexElementTypeiOS 11.0+

  Constants that specify the storage type of an element within a fetch index.
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  NSDeleteRule

  Constants that specify what happens to related objects when an object is deleted.

Fetching Data 7

Requests and result types for querying records from a store.

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  NSFetchRequestiOS 3.0+

  A description of search criteria used to retrieve records from a persistent store.
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  NSAsynchronousFetchRequestiOS 8.0+

  A fetch request that executes in the background and reports its results through a completion block.
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  NSFetchRequestExpressioniOS 3.0+

  An expression that represents a fetch request as part of a predicate or computed value.
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  NSFetchRequestResult

  A protocol adopted by types that can be returned as results of a fetch request.
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  NSFetchRequestResultType

  Constants that specify the kind of result a fetch request returns, such as objects, IDs, or counts.
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  NSAsynchronousFetchResultiOS 8.0+

  A result object that holds the records returned by an asynchronous fetch request.
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  NSManagedObjectContextConcurrencyTypeiOS 5.0+

  Constants that specify the threading model a managed object context uses.

Driving Table and Collection Views 5

Controllers and protocols that track fetch results and report changes to your interface.

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  NSFetchedResultsControlleriOS 3.0+

  A controller that manages the results of a fetch request and reports changes for table and collection views.
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  NSFetchedResultsControllerDelegate

  A protocol that receives notifications when a fetched results controller's content changes.
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  NSFetchedResultsSectionInfo

  A protocol that provides information about one section of a fetched results controller's results.
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  NSFetchedResultsChangeTypeiOS 3.0+

  Constants that identify the kind of change reported by a fetched results controller, such as insert or delete.
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  NSSnapshotEventType

  Constants that identify the kind of snapshot event delivered when a managed object's state changes.

Batch Operations 9

Requests and results that insert, update, or delete many records efficiently without loading them into memory.

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  NSBatchInsertRequestiOS 13.0+

  A request that inserts many records directly into the store without loading them into a context.
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  NSBatchInsertResultiOS 13.0+

  A result object that reports the outcome of a batch insert request.
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  NSBatchInsertRequestResultTypeiOS 13.0+

  Constants that specify what a batch insert request returns, such as status, object IDs, or count.
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  NSBatchUpdateRequestiOS 8.0+

  A request that updates many records directly in the store without loading them into a context.
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  NSBatchUpdateResultiOS 8.0+

  A result object that reports the outcome of a batch update request.
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  NSBatchUpdateRequestResultTypeiOS 8.0+

  Constants that specify what a batch update request returns, such as status, object IDs, or count.
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  NSBatchDeleteRequestiOS 9.0+

  A request that deletes many records directly in the store without loading them into a context.
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  NSBatchDeleteResultiOS 9.0+

  A result object that reports the outcome of a batch delete request.
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  NSBatchDeleteRequestResultTypeiOS 9.0+

  Constants that specify what a batch delete request returns, such as status, object IDs, or count.

Saving and Merging Changes 6

Requests and policies that persist edits and resolve conflicts between contexts and the store.

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  NSSaveChangesRequestiOS 5.0+

  A request that asks a persistent store to insert, update, delete, or lock managed objects.
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  NSMergePolicyiOS 5.0+

  A policy that resolves conflicts between a managed object context and its persistent store.
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  NSMergePolicyType

  Constants that identify the built-in policies for resolving save conflicts.
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  NSMergeConflictiOS 5.0+

  An object that describes a conflict between an in-memory object and its persisted or cached state.
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  NSConstraintConflictiOS 9.0+

  An object that describes a conflict arising from a violated uniqueness constraint during a save.
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  NSQueryGenerationTokeniOS 10.0+

  A token that pins a managed object context to a specific generation of the persistent store's data.

Persistent History Tracking 7

Types that record and query the history of changes made to a persistent store.

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  NSPersistentHistoryChangeRequestiOS 11.0+

  A request that fetches or purges the recorded history of changes to a persistent store.
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  NSPersistentHistoryResultiOS 11.0+

  A result object that holds the transactions, changes, or tokens returned by a history request.
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  NSPersistentHistoryResultTypeiOS 11.0+

  Constants that specify what a persistent history request returns, such as transactions or tokens.
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  NSPersistentHistoryTransactioniOS 11.0+

  An object that groups the changes recorded together during a single save operation.
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  NSPersistentHistoryChangeiOS 11.0+

  An object that describes a single insertion, update, or deletion recorded in persistent history.
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  NSPersistentHistoryChangeTypeiOS 11.0+

  Constants that identify whether a history change is an insertion, update, or deletion.
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  NSPersistentHistoryTokeniOS 11.0+

  An opaque token that marks a position in a store's persistent history.

CloudKit Integration 5

Types that mirror a Core Data store to CloudKit and report synchronization events.

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  NSPersistentCloudKitContainerOptionsiOS 13.0+

  NSPersistentCloudKitContainerOptions provides customization of how NSPersistentCloudKitContainer aligns a given instance of NSPersistentStoreDescription with a CloudKit database.
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  NSPersistentCloudKitContainerSchemaInitializationOptions

  Options that control how the CloudKit schema is initialized for a persistent store.
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  NSPersistentCloudKitContainerEventRequestiOS 14.0+

  A request that fetches the history of CloudKit setup, import, and export events.
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  NSPersistentCloudKitContainerEventResultiOS 14.0+

  A result object that holds the CloudKit synchronization events returned by an event request.
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  NSPersistentStoreUbiquitousTransitionType

  Constants that identify the kind of transition a ubiquitous store undergoes during syncing.

Model Migration 10

Types that evolve a persistent store's schema across model versions.

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  NSMigrationManageriOS 3.0+

  An object that performs migration of a store from a source model version to a destination version.
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  NSStagedMigrationManageriOS 17.0+

  An object that performs a sequence of staged migrations to evolve a store across model versions.
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  NSMigrationStageiOS 17.0+

  An abstract base class representing one stage of a staged migration between model versions.
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  NSLightweightMigrationStageiOS 17.0+

  A migration stage that infers and applies lightweight schema changes between two model versions.
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  NSCustomMigrationStageiOS 17.0+

  A migration stage that performs custom logic to transform data between two model versions.
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  NSMappingModeliOS 3.0+

  An object that describes how to map data from a source managed object model to a destination model.
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  NSEntityMappingiOS 3.0+

  An object that specifies how instances of a source entity are mapped to a destination entity during migration.
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  NSPropertyMappingiOS 3.0+

  An object that specifies how a single property is mapped from a source entity to a destination entity.
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  NSEntityMigrationPolicyiOS 3.0+

  A class you subclass to customize how an entity's instances are migrated to a new model version.
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  NSEntityMappingType

  Constants that specify the kind of mapping applied to an entity during migration.

Custom and Atomic Stores 9

Base classes for implementing your own persistent store backends.

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  NSPersistentStoreiOS 3.0+

  An abstract base class that represents a single store managed by a persistent store coordinator.
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  NSAtomicStoreiOS 3.0+

  An abstract base class for a persistent store that loads and saves its entire content as a single atomic unit.
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  NSAtomicStoreCacheNodeiOS 3.0+

  An object that represents a single managed object's data within an atomic store's in-memory cache.
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  NSIncrementalStoreiOS 5.0+

  An abstract base class for a persistent store that loads and saves records incrementally on demand.
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  NSIncrementalStoreNodeiOS 5.0+

  An object that holds the property values of a single managed object in an incremental store.
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  NSPersistentStoreRequestiOS 5.0+

  An abstract base class for requests sent to a persistent store, such as fetch and save requests.
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  NSPersistentStoreRequestType

  Constants that identify the kind of request sent to a persistent store.
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  NSPersistentStoreResultiOS 8.0+

  An abstract base class representing the result of a request executed against a persistent store.
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  NSPersistentStoreAsynchronousResultiOS 8.0+

  A result object that represents the in-progress outcome of an asynchronous persistent store request.

Spotlight Integration 1

Support for indexing Core Data content so it appears in system search.

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  NSCoreDataCoreSpotlightDelegateiOS 11.0+

  An object that indexes a Core Data store's content into Spotlight so it appears in system search.

Classes 2

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  NSManagedObjectiOS 3.0+
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  NSManagedObjectContextiOS 3.0+

Type Aliases 27

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  NSPersistentStoreAsynchronousFetchResultCompletionBlock
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  __Float16x4_t
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  __Float16x8_t
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  __Float32x2_t
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  __Float32x4_t
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  __Float64x2_t
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  __Int16x4_t
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  __Int16x8_t
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  __Int32x2_t
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  __Int32x4_t
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  __Int64x2_t
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  __Int8x16_t
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  __Int8x8_t
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  __NSConstantString
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  __Poly16x4_t
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  __Poly16x8_t

Extends 5