NISO Z39.50 : 2003

Foreword
1 Introduction
2 Definitions
3 Information Retrieval Service
4 Protocol Specification
APPENDIXES
APPENDIX 1 (normative) - OID: Z39.50 OBJECT IDENTIFIERS
APPENDIX 2 (normative) - ATR: ATTRIBUTE SETS
APPENDIX 3 (normative) - DIAG: Z39.50 DIAGNOSTICS
APPENDIX 4 (normative) - REC: RECORD SYNTAXES
APPENDIX 5 (normative) - RSC: RESOURCE REPORT FORMATS
APPENDIX 6 (normative) - ACC: ACCESS CONTROL FORMATS
APPENDIX 7 (normative) - EXT: EXTENDED SERVICES DEFINED
             BY THIS STANDARD
APPENDIX 8 (normative) - USR: USER INFORMATION FORMATS
APPENDIX 9 (normative) - ESP: ELEMENT SPECIFICATION FORMATS
APPENDIX 10 (normative) - VAR: VARIANT SETS
APPENDIX 11 (normative) - TAG: TAGSET DEFINITIONS AND SCHEMAS
APPENDIX 12 (informative) - ERS: EXTENDED RESULT SET MODEL
APPENDIX 13 (informative) - RET: Z39.50 RETRIEVAL
APPENDIX 14 (normative) - NEGO: Z39.50 NEGOTIATION MODEL
APPENDIX 15 (informative) - NEGO2: DEVELOPMENT AND
            REGISTRATION OF NEGOTIATION RECORDS
APPENDIX 16 (informative) - PRO: Z39.50 PROFILES
APPENDIX 17 (informative) - Z39.50 ATTRIBUTE ARCHITECTURE
APPENDIX 18 (normative) - ASN1: Z39.50 ASN.1
APPENDIX 19 MAINTENANCE AGENCY, ZIG, AND
            HISTORICAL BACKGROUND

Defines the Information Retrieval Application Service (section 3) and specifies the Information Retrieval Application Protocol (section 4).