requirement for data exploration by a series of ad hoc queries led to the development
of the Merlin system.
•Like the Thor system, Merlin
provides access to a Thor database. However, the "view"
Merlin gives of the database is quite different than Thor's
view: Thor is a "microscope" for the database that
provides a detailed view of individual datatrees, whereas
Merlin might be thought of as a "macroscope" that
performs operations on the database as a whole.