This digest highlights bibliographic file creation and maintenance practices that affect a library's ability to use various automated system capabilities for current and future applications. The first section covers database creation options, cataloging resource file forms, and record creation and editing. The importance of adherence to MARC formatting and a consistent format are stressed in the next two sections. Correcting a defective database is addressed in the fourth section. The fifth section lists guidelines for a healthy bibliographic file: (1) follow the established national standard for recording and formatting bibliographic data (MARC format); (2) include and maintain all relevant data elements in the records; (3) consider future system requirements and capabilities; (4) pay attention to coded data elements and standard numbers in record creation and editing; (5) select an automated library system with the ability to output records in MARC format; and (6) document changes in database creation practices, procedures, and policies. (5 references) (MES)