Need info on Windchill IBA attributes.

I am trying to update the last modification date and the creation date on a Windchill Object, say WTPart, and while searching info regarding this I stumbled on IBA attributes.

I am new to Windchill and am not able to relate these kind of terminologies to the application.

So can somebody please explain to me what do IBA attributes in Windchill mean, and how are they different from other attributes of Windchill.
and if the last modification date and creation date of objects are IBA attributes, is there a way to update these attributes using a Windchill task so that we won't need to worry about updating these attributes directly to the database.