CKQuerySubscription

The matching criteria to apply to records.

Option flags describing the firing behavior of the subscription

The record type being monitored in a query-based subscription. (read-only)

Zone that this query subscription is scoped to.

Initializes and returns a query-based subscription that monitors records with the specified options.

Initializes and returns a query-based subscription that monitors records with the specified options.

Configuration options for a subscription.

Use a CKSubscription object to track changes occurring on the server.

A notification that is triggered by changes to the contents of a record zone.

A notification that is triggered by changes to the contents of a database.

Notifications are used to inform your application of changes made by another device.

Subscriptions are used to request notifications of specific subsets of data changes.