The first of a three part series, this review covers the online bibliographic and numeric databases of physics, mathematics, and computer science. Two database directories are mentioned, and a table listing databases, producers, major subjects, and starting dates is appended. Fifteen references are provided. (EJS)

Describes the selection policies, subject access, search aids, indexing, coverage, and currency of three online databases in the fields of electronics and computer science: COMPENDEX, ELCOM, and INSPEC. Sample searches are displayed for each database. A bibliography cites five references. (FM)

Presents a description of Act I, the newest database from Data Courier, Inc., which provides an online directory of computer related companies and products. Highlights include content, applications, most useful features, classification code/classification name, and output. A sample record, journals list, and database specifications are included.…