This manual covers the new release of CICS/ESA - Version 3, and explains CICS interfaces and data access with DB2/SQL, Datacom/DB, and IMS/DLI. On-line system designers and programmers can learn how to develop and program a CICS system from scratch. The book emphasizes techniques for creating a structured and reusable code that increases development productivity and reduces maintenance requirements. Numerous sample programs are included, along with tips for converting CICS code to VS COBOL II.