*On ProxyPropertylevel: ets (ExportTimeStamp), its (ImportTimeStamp)
==On ObjectLevel / BaseClass ==
=== CreationTimeStamp ===
Saves the date and time when an object is created.
The CreationTimeStamp (cts) is set exactly once and in that moment when a new Ubikle is instantiated in the working memory. This time stamp will never be changed by UBIK. This timestamp does not denote when the Ubikle was written to the database eventually.
=== UpdateTimeStamp ===
Saves the date and time when an object has been changed. If the UTS is null or “01.01.0001 00:00:00” then return the CTS.
It is sufficient that an existing value is checked on the client. This can be for example by simply pressing an OK button.
== On ProxyPropertyLevel / ProxyAttribute ===== InterfaceTimestamp ===
This timestamp actually becomes transformed to the ets or its so it exists twice.
==== ImportTimeStamp (ITS) ====
Saves the UTS of a property of an Ubikle so that a third party system knows when the value has been changed.
If UBIK cannot find the property set the InterfaceTimeStamp to now.