A guide to IBM's Distributed Relational Database Architecture (DRDA) which prepares the reader for exam 507 of the IBM Certified Advanced Technical Expert-DB2 Universal Database V5 Program. After an overview of DB2, the text covers DRDA using SNA and TCP/IP, considerations when configuring a gateway, performance and system management considerations, and diagnostic tips and techniques. Annotation c. by Book News, Inc., Portland, Or.