---
title: deleteRule
framework: coredata
role: symbol
role_heading: Instance Property
path: coredata/nsrelationshipdescription/deleterule
---

# deleteRule

The rule to apply when you delete the relationship’s owning managed object.

## Declaration

```swift
var deleteRule: NSDeleteRule { get set }
```

## Discussion

Discussion The default value is NSDeleteRule.nullifyDeleteRule. For possible values, see NSDeleteRule.

## See Also

### Configuring Delete Behavior

- [NSDeleteRule](coredata/nsdeleterule.md)