Includes bibliographical references (p. 15-18).

"Pre-print from IEEE Data Engineering, June 1990"

Includes bibliographical references (p. 26-29).

Reprint. "1063-6382/93 $03.00 1993 IEEE."--P. 670. "April 1993."

Data quality is crucial for operational efficiency and sound decision making. This paper focuses on believability, a major aspect of quality, measured along three dimensions: trustworthiness, reasonableness, and temporality. We ground our approach on provenance, i.e. the origin and subsequent...