3.4. Functions
From the view of software, the functional modules can be achieved through the graphics rendering and
graphics packaging, so they can be divided into the following modules: topology presentation module,
topology management module and the data control module. Topology presentation module includes topology,
resource tree and information table, corresponding to the graphical presentation layer in the software
architecture; topology management module includes processing topology, analyzing managed object and
external interfaces, corresponding to the logic business layer; the data control module includes two parts,
corresponding to the data processing layer.