In addition to the generic FME feature attributes that FME Workbench adds to all features (see About Feature Type Attributes), this format also adds format-specific attributes (Format Attributes).
Features read from a database consist of a series of feature types and attribute values. They have no geometry. Feature types are defined in Pervasive PSQL Writer: Feature Type Parameters.
The attribute names can be returned by the query, and as such may have their original table names as qualifiers. Attribute names are defined in Pervasive PSQL User Attributes.