ISO/IEC 20802-1:2016

INTERNATIONAL ISO/IEC
STANDARD 20802-1
First edition
2016-12-15
Information technology — Open data
protocol (OData) v4.0
Part 1:
Core
Technologies de l'information — Protocole de données ouvertes
(OData) v4.0 —
Partie 2: Base
Reference number
ISO/IEC 20802-1:2016(E)
©
ISO/IEC 2016

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ISO/IEC 20802-1:2016(E)

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ISO/IEC 20802-1:2016(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO or IEC participate in the development of International Standards through technical
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work. In the field of information technology, ISO and IEC have established a joint technical committee,
ISO/IEC JTC 1.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of document should be noted. This document was drafted in accordance with the
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Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.
ISO/IEC 20802‐1 was prepared by OASIS and was adopted, under the PAS procedure, by Joint Technical
Committee ISO/IEC JTC 1, Information technology, in parallel with its approval by the national bodies of
ISO and IEC.

© ISO/IEC 2016 – All rights reserved iii

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ISO/IEC 20802-1:2016(E)

OData Version 4.0 Part 1: Protocol Plus
Errata 02
OASIS Standard incorporating Approved Errata 02
30 October 2014
Specification URIs
This version:
http://docs.oasis-open.org/odata/odata/v4.0/errata02/os/complete/part1-protocol/odata-v4.0-
errata02-os-part1-protocol-complete.doc (Authoritative)
http://docs.oasis-open.org/odata/odata/v4.0/errata02/os/complete/part1-protocol/odata-v4.0-
errata02-os-part1-protocol-complete.html
http://docs.oasis-open.org/odata/odata/v4.0/errata02/os/complete/part1-protocol/odata-v4.0-
errata02-os-part1-protocol-complete.pdf
Previous version:
http://docs.oasis-open.org/odata/odata/v4.0/errata01/os/complete/part1-protocol/odata-v4.0-
errata01-os-part1-protocol-complete.doc (Authoritative)
http://docs.oasis-open.org/odata/odata/v4.0/errata01/os/complete/part1-protocol/odata-v4.0-
errata01-os-part1-protocol-complete.html
http://docs.oasis-open.org/odata/odata/v4.0/errata01/os/complete/part1-protocol/odata-v4.0-
errata01-os-part1-protocol-complete.pdf
Latest version:
http://docs.oasis-open.org/odata/odata/v4.0/odata-v4.0-part1-protocol.doc (Authoritative)
http://docs.oasis-open.org/odata/odata/v4.0/odata-v4.0-part1-protocol.html
http://docs.oasis-open.org/odata/odata/v4.0/odata-v4.0-part1-protocol.pdf
Technical Committee:
OASIS Open Data Protocol (OData) TC
Chairs:
Ralf Handl (ralf.handl@sap.com), SAP AG
Ram Jeyaraman (Ram.Jeyaraman@microsoft.com), Microsoft
Editors:
Michael Pizzo (mikep@microsoft.com), Microsoft
Ralf Handl (ralf.handl@sap.com), SAP AG
Martin Zurmuehl (martin.zurmuehl@sap.com), SAP AG
Additional artifacts:
This prose specification is one component of a Work Product that also includes:
 List of Errata items. OData Version 4.0 Errata 02. Edited by Michael Pizzo, Ralf Handl, Martin
Zurmuehl, and Hubert Heijkers. 30 October 2014. OASIS Approved Errata. http://docs.oasis-
open.org/odata/odata/v4.0/errata02/os/odata-v4.0-errata02-os.html.
 OData Version 4.0 Part 1: Protocol Plus Errata 02 (this document). Edited by Michael Pizzo,
Ralf Handl, and Martin Zurmuehl. 30 October 2014. OASIS Standard incorporating Approved
Errata 02. http://docs.oasis-open.org/odata/odata/v4.0/errata02/os/complete/part1-
protocol/odata-v4.0-errata02-os-part1-protocol-complete.html.
 OData Version 4.0 Part 2: URL Conventions Plus Errata 02. Edited by Michael Pizzo, Ralf
Handl, and Martin Zurmuehl. 30 October 2014. OASIS Standard incorporating Approved
odata-v4.0-errata02-os-part1-protocol-complete 30 October 2014
Standards Track Work Product Copyright © OASIS Open 2014. All Rights Reserved. Page 1 of 74
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ISO/IEC 20802-1:2016(E)
Errata 02. http://docs.oasis-open.org/odata/odata/v4.0/errata02/os/complete/part2-url-
conventions/odata-v4.0-errata02-os-part2-url-conventions-complete.html.
 OData Version 4.0 Part 3: Common Schema Definition Language (CSDL) Plus Errata 02.
Edited by Michael Pizzo, Ralf Handl, and Martin Zurmuehl. 30 October 2014. OASIS
Standard incorporating Approved Errata 02. http://docs.oasis-
open.org/odata/odata/v4.0/errata02/os/complete/part3-csdl/odata-v4.0-errata02-os-part3-
csdl-complete.html.
 ABNF components: OData ABNF Construction Rules Version 4.0 and OData ABNF Test
Cases. http://docs.oasis-open.org/odata/odata/v4.0/errata02/os/complete/abnf/.
 Vocabulary components: OData Core Vocabulary, OData Measures Vocabulary and OData
Capabilities Vocabulary. http://docs.oasis-
open.org/odata/odata/v4.0/errata02/os/complete/vocabularies/.
 XML schemas: OData EDMX XML Schema and OData EDM XML Schema. http://docs.oasis-
open.org/odata/odata/v4.0/errata02/os/complete/schemas/.
 OData Metadata Service Entity Model: http://docs.oasis-
open.org/odata/odata/v4.0/errata02/os/complete/models/.
 Change-marked (redlined) versions of OData Version 4.0 Part 1, Part 2, and Part 3. OASIS
Standard incorporating Approved Errata 02. http://docs.oasis-
open.org/odata/odata/v4.0/errata02/os/redlined/.
Related work:
This specification is related to:
 OData Version 4.0 Part 1: Protocol. Edited by Michael Pizzo, Ralf Handl, and Martin
Zurmuehl. 24 February 2014. OASIS Standard. http://docs.oasis-
open.org/odata/odata/v4.0/os/part1-protocol/odata-v4.0-os-part1-protocol.html.
 OData Atom Format Version 4.0. Edited by Martin Zurmuehl, Michael Pizzo, and Ralf Handl.
Latest version. http://docs.oasis-open.org/odata/odata-atom-format/v4.0/odata-atom-format-
v4.0.html.
 OData JSON Format Version 4.0. Edited by Ralf Handl, Michael Pizzo, and Mark Biamonte.
Latest version. http://docs.oasis-open.org/odata/odata-json-format/v4.0/odata-json-format-
v4.0.html.
Declared XML namespaces:
 http://docs.oasis-open.org/odata/ns/edmx
 http://docs.oasis-open.org/odata/ns/edm
Abstract:
The Open Data Protocol (OData) enables the creation of REST-based data services, which allow
resources, identified using Uniform Resource Locators (URLs) and defined in an Entity Data
Model (EDM), to be published and edited by Web clients using simple HTTP messages. This
document defines the core semantics and facilities of the protocol.
Status:
This document was last revised or approved by the OASIS Open Data Protocol (OData) TC on
the above date. The level of approval is also listed above. Check the “Latest version” location
noted above for possible later revisions of this document. Any other numbered Versions and
other technical work produced by the Technical Committee (TC) are listed at https://www.oasis-
open.org/committees/tc_home.php?wg_abbrev=odata#technical.
TC members should send comments on this specification to the TC’s email list. Others should
send comments to the TC’s public comment list, after subscribing to it by following the
instructions at the “Send A Comment” button on the TC’s web page at https://www.oasis-
open.org/committees/odata/.
For information on whether any patents have been disclosed that may be essential to
implementing this specification, and any offers of patent licensing terms, please refer to the
Intellectual Property Rights section of the Technical Committee web page (https://www.oasis-
open.org/committees/odata/ipr.php).
Citation format:
When referencing this specification the following citation format should be used:
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ISO/IEC 20802-1:2016(E)
[OData-Part1]
OData Version 4.0 Part 1: Protocol Plus Errata 02. Edited by Michael Pizzo, Ralf Handl, and
Martin Zurmuehl. 30 October 2014. OASIS Standard incorporating Approved Errata 02.
http://docs.oasis-open.org/odata/odata/v4.0/errata02/os/complete/part1-protocol/odata-v4.0-
errata02-os-part1-protocol-complete.html. Latest version: http://docs.oasis-
open.org/odata/odata/v4.0/odata-v4.0-part1-protocol.html.

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ISO/IEC 20802-1:2016(E)
Notices
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ISO/IEC 20802-1:2016(E)
Table of Contents
1 Introduction . 10
1.1 Terminology . 10
1.2 Normative References . 10
1.3 Typographical Conventions . 11
2 Overview . 12
3 Data Model . 13
3.1 Annotations . 13
4 Service Model . 15
4.1 Entity-Ids and Entity References . 15
4.2 Read URLs and Edit URLs . 15
4.3 Transient Entities . 15
5 Versioning . 16
5.1 Protocol Versioning . 16
5.2 Model Versioning . 16
6 Extensibility . 17
6.1 Query Option Extensibility . 17
6.2 Payload Extensibility . 17
6.3 Action/Function Extensibility . 17
6.4 Vocabulary Extensibility . 17
6.5 Header Field Extensibility . 18
6.6 Format Extensibility . 18
7 Formats . 19
8 Header Fields . 20
8.1 Common Headers . 20
8.1.1 Header Content-Type . 20
8.1.2 Header Content-Encoding . 20
8.1.3 Header Content-Language . 20
8.1.4 Header Content-Length . 20
8.1.5 Header OData-Version. 20
8.2 Request Headers . 21
8.2.1 Header Accept . 21
8.2.2 Header Accept-Charset . 21
8.2.3 Header Accept-Language . 21
8.2.4 Header If-Match . 21
8.2.5 Header If-None-Match. 21
8.2.6 Header OData-Isolation . 22
8.2.7 Header OData-MaxVersion . 22
8.2.8 Header Prefer . 22
8.2.8.1 Preference odata.allow-entityreferences . 23
8.2.8.2 Preference odata.callback . 23
8.2.8.3 Preference odata.continue-on-error . 24
8.2.8.4 Preference odata.include-annotations . 24
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ISO/IEC 20802-1:2016(E)
8.2.8.5 Preference odata.maxpagesize . 25
8.2.8.6 Preference odata.track-changes . 25
8.2.8.7 Preference return=representation and return=minimal . 25
8.2.8.8 Preference respond-async . 26
8.2.8.9 Preference wait . 26
8.3 Response Headers . 26
8.3.1 Header ETag . 26
8.3.2 Header Location . 27
8.3.3 Header OData-EntityId . 27
8.3.4 Header Preference-Applied . 27
8.3.5 Header Retry-After . 27
9 Common Response Status Codes . 28
9.1 Success Responses . 28
9.1.1 Response Code 200 OK . 28
9.1.2 Response Code 201 Created . 28
9.1.3 Response Code 202 Accepted . 28
9.1.4 Response Code 204 No Content . 28
9.1.5 Response Code 3xx Redirection . 28
9.1.6 Response Code 304 Not Modified . 28
9.2 Client Error Responses . 29
9.2.1 Response Code 404 Not Found . 29
9.2.2 Response Code 405 Method Not Allowed . 29
9.2.3 Response Code 410 Gone . 29
9.2.4 Response Code 412 Precondition Failed . 29
9.3 Server Error Responses . 29
9.3.1 Response Code 501 Not Implemented . 29
9.4 In-Stream Errors . 29
10 Context URL . 30
10.1 Service Document . 30
10.2 Collection of Entities . 30
10.3 Entity . 31
10.4 Singleton . 31
10.5 Collection of Derived Entities . 31
10.6 Derived Entity . 32
10.7 Collection of Projected Entities . 32
10.8 Projected Entity . 32
10.9 Collection of Projected Expanded Entities . 33
10.10 Projected Expanded Entity . 33
10.11 Collection of Entity References . 33
10.12 Entity Reference . 34
10.13 Property Value . 34
10.14 Collection of Complex or Primitive Types . 34
10.15 Complex or Primitive Type . 34
10.16 Operation Result . 34
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ISO/IEC 20802-1:2016(E)
10.17 Delta Response . 35
10.18 Item in a Delta Response . 35
10.19 $all Response . 35
10.20 $crossjoin Response . 35
11 Data Service Requests . 36
11.1 Metadata Requests . 36
11.1.1 Service Document Request . 36
11.1.2 Metadata Document Request. 36
11.1.3 Metadata Service Document Request . 36
11.2 Requesting Data . 36
11.2.1 Evaluating System Query Options . 37
11.2.2 Requesting Individual Entities . 37
11.2.3 Requesting Individual Properties . 37
11.2.3.1 Requesting a Property's Raw Value using $value . 38
11.2.4 Specifying Properties to Return . 38
11.2.4.1 System Query Option $s
...