  The Prime Focus Spectrograph (PFS) is a wide-field, multi-object spectrograph
accommodating 2394 fibers to observe the sky at the prime focus of the Subaru
telescope. The software system to operate a spectroscopic survey is structured
by the four packages: Instrument control software, exposure targeting software,
data reduction pipeline, and survey planning and tracking software. In
addition, we operate a database system where various information such as
properties of target objects, instrument configurations, and observation
conditions is stored and is organized via a standardized data model for future
references to update survey plans and to scientific researches. In this
article, we present an overview of the software system and describe the
workflows that need to be performed in the PFS operation, with some highlights
on the database that organizes various information from sub-processes in the
survey operation, and on the process of fiber configuration from the software
perspectives.
