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  "title" : "CKRecord.SystemFieldKey"
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# CKRecord.SystemFieldKey

Possible values for types of system field keys on records.

```
enum SystemFieldKey
```

## Overview

Use the values [`share`](/documentation/CloudKit/CKRecord/SystemFieldKey/share) and [`parent`](/documentation/CloudKit/CKRecord/SystemFieldKey/parent) when creating an <doc://com.apple.documentation/documentation/Foundation/NSPredicate> for a [`CKQuery`](/documentation/CloudKit/CKQuery) to reference a record’s [`share`](/documentation/CloudKit/CKRecord/share) or [`parent`](/documentation/CloudKit/CKRecord/parent) property, respectively.

## Topics

### Types of Shared Records

[`static let parent: CKRecord.FieldKey`](/documentation/CloudKit/CKRecord/SystemFieldKey/parent)

The key constant that a record uses for its CKRecord.parent.

[`static let share: CKRecord.FieldKey`](/documentation/CloudKit/CKRecord/SystemFieldKey/share)

The key constant that a record uses for its CKRecord.share.

### Type Properties

[`static var creationDate: CKRecord.FieldKey`](/documentation/CloudKit/CKRecord/SystemFieldKey/creationDate)

A key constant that a record uses for its CKRecord.creationDate.

[`static var creatorUserRecordID: CKRecord.FieldKey`](/documentation/CloudKit/CKRecord/SystemFieldKey/creatorUserRecordID)

A key constant that a record uses for its CKRecord.creatorUserRecordID.

[`static var lastModifiedUserRecordID: CKRecord.FieldKey`](/documentation/CloudKit/CKRecord/SystemFieldKey/lastModifiedUserRecordID)

A key constant that a record uses for its CKRecord.lastModifiedUserRecordID.

[`static var modificationDate: CKRecord.FieldKey`](/documentation/CloudKit/CKRecord/SystemFieldKey/modificationDate)

A key constant that a record uses for its CKRecord.modificationDate.

[`static var recordID: CKRecord.FieldKey`](/documentation/CloudKit/CKRecord/SystemFieldKey/recordID)

A key constant that a record uses for its CKRecord.recordID.

---

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