... Up: Archives and Information Services . Previous: The VizieR System for Accessing Astronomical Data . ... A data archive is near completion at the ASC to store and provide access to AXAF data. ... It consists of a number of different servers which handle flat data files, relational data, replication across multiple sites and the interface to the WWW. ... This paper presents the overall archive architecture and the design of client and server components as it was used during ground calibration. ...