TY - BOOK AU - Shepherd,John C. TI - Database management: theory and application SN - 0256078297 AV - QA76.9.D3 S534 1990 U1 - 001.644 20 PY - 1990/// CY - Homewood, IL PB - Irwin KW - Database management N1 - Includes bibliographical references (p. 778-781) ER -