The Sloan Digital Sky Survey (SDSS)1 is an astrophysics project to pro
duce a three dimensional map of a quarter of the Universe. We present
a description of the SDSS prototype, the Drift Scan Camera (DSC) onlin
e system,2 WhiCh is operational and currently being deployed. We also
present the status of the development of the SDSS online system. The h
ardware and software architectures for both systems are provided