ncal:Trigger: Tracker Ontology Reference Manual

## ncal:Trigger ncal:Trigger |

## Description

An alarm trigger. This class has been created to serve as the range of ncal:trigger property. See the documentation for ncal:trigger for more details.

## Class hierarchy

        rdfs:Resource
        ╰── ncal:Trigger

## Properties

### The `“ncal:triggerDuration”` property

    “ncal:triggerDuration”          xsd:integer

The duration of a trigger. This property has been created to express the VALUE=DURATION parameter of the TRIGGER property. See documentation for ncal:trigger for more details.

Number of possible elements per resource (Cardinality): 1

### The `“ncal:triggerDateTime”` property

    “ncal:triggerDateTime”          xsd:dateTime

The exact date and time of the trigger. This property has been created to express the VALUE=DATE, and VALUE=DATE-TIME parameters of the TRIGGER property. See the documentation for ncal:trigger for more details

Number of possible elements per resource (Cardinality): 1

### The `“ncal:related”` property

    “ncal:related”          ncal:TriggerRelation

To specify the relationship of the alarm trigger with respect to the start or end of the calendar component. Inspired by RFC 2445 4.2.14. The RFC has specified two possible values for this property ('START' and 'END') they have been expressed as instances of the TriggerRelation class.

Number of possible elements per resource (Cardinality): 1

## See also

The upstream documentation for the NCAL ontology.