# concept[].definition
The trigger occurs in response to a specific named event, and no other information about the trigger is specified. Named events are completely pre-coordinated, and the formal semantics of the trigger are not provided.

# concept[].definition
The trigger occurs at a specific time or periodically as described by a timing or schedule. A periodic event cannot have any data elements, but may have a name assigned as a shorthand for the event.

# concept[].definition
The trigger occurs whenever data of a particular type is changed in any way, either added, modified, or removed.

# concept[].concept[].definition
The trigger occurs whenever data of a particular type is added.

# concept[].concept[].definition
The trigger occurs whenever data of a particular type is modified.

# concept[].concept[].definition
The trigger occurs whenever data of a particular type is removed.

# concept[].definition
The trigger occurs whenever data of a particular type is accessed.

# concept[].definition
The trigger occurs whenever access to data of a particular type is completed.