ENFORM User's Guide

Contents
058058 Tandem Computers Incorporated ix
Section 7 ENFORM Servers
Why Use ENFORM Servers 7-2
Writing ENFORM Servers 7-3
ENFORM Server and Query Processor Dialogue 7-3
Interprocess Communication 7-4
Message Protocol and Descriptions 7-6
Message Components 7-7
DDL Message Header Description 7-7
ENFORM Server and Query Processor Messages 7-8
INITIATE-INPUT-REQUEST Message 7-9
INITIATE-INPUT-REPLY Message 7-10
RECORD-INPUT-REQUEST Message 7-10
RECORD-INPUT-REPLY Message 7-12
TERMINATE-INPUT-REQUEST Message 7-14
TERMINATE-INPUT-REPLY Message 7-15
ENFORM Server Operation—Restrictions and Conditions 7-15
Using An ENFORM Server 7-16
Restrictions Related to Using ENFORM Servers 7-16
ENFORM Server Performance Considerations 7-17
Qualification 7-17
ENFORM Server Context 7-18
Variable-Length Data 7-18
Server Location 7-18
ENFORM Server Example 7-18
Appendix A Syntax Summary
Language Elements A-1
Statements A-3
Clauses A-7
Commands A-14
ENFORM Procedures A-15