A textbook for AS/400 users, both student and professional. Query is presented as an easy and fast tool for creating reports and files from AS/400 databases. Topics are presented in order from simple to complex, including defining database files to Query, selecting and sequencing fields, generating new numeric and character fields, sorting within Query, joining database files, defining custom headings, and creating new database files. No prior programming knowledge is necessary. Annotation copyright Book News, Inc. Portland, Or.