This directory contains a single file (CATALOG.CAT) which contains all of
the metadata associated with this CD-ROM. The metadata is organized into
hierarchical templates which can be loaded into a relational database. The
component templates have been arranged in this file from the most general to
most specific, thus the first portion of the file contains mission and
spacecraft related metadata; next is the instrument (OMNS) description
templates; and then the dataset, dataset processing, parameter, and software
templates for each of the instruments.

Template         Contents
_____________________________________________________________
mission          describes the Pioneer Venus mission
spacecraft       describes the Pioneer Venus Orbiter component of the mission
instrument       describes an instrument
dataset          describes a PDS dataset
processing       describes the path between data products (processing levels)
parameter        describes instrument and dataset parameters
software         describes data processing software and processing steps