Geographic information - Methodology for feature cataloguing (ISO 19110:2016)

ISO 19110:2016 defines the methodology for cataloguing feature types. This document specifies how feature types can be organized into a feature catalogue and presented to the users of a set of geographic data. This document is applicable to creating catalogues of feature types in previously uncatalogued domains and to revising existing feature catalogues to comply with standard practice. This document applies to the cataloguing of feature types that are represented in digital form. Its principles can be extended to the cataloguing of other forms of geographic data. Feature catalogues are independent of feature concept dictionaries defined in ISO 19126 and can be specified without having to use or create a Feature Concept Dictionary.
ISO 19110:2016 is applicable to the definition of geographic features at the type level. This document is not applicable to the representation of individual instances of each type. This document excludes portrayal schemas as specified in ISO 19117.
ISO 19110:2016 may be used as a basis for defining the universe of discourse being modelled in a particular application, or to standardize general aspects of real world features being modelled in more than one application.

Geoinformation - Objektartenkataloge (ISO 19110:2016)

Information géographique - Méthodologie de catalogage des entités (ISO 19110:2016)

L'ISO 19110:2016 définit la méthodologie de catalogage des types d'entités. Il spécifie comment les types d'entités peuvent être organisés dans un catalogue d'entités et présentés aux utilisateurs d'un jeu de données géographiques. Le présent document s'applique à la création de catalogues de types d'entités dans des domaines jusqu'ici non catalogués et à la révision des catalogues d'entités existants pour les rendre conformes aux pratiques normalisées. Il s'applique au catalogage des types d'entités qui sont représentés sous forme numérique. Ses principes peuvent être élargis au catalogage d'autres formes de données géographiques. Les catalogues d'entités sont indépendants des dictionnaires de concepts d'entités définis dans l'ISO 19126 et il est possible de les spécifier sans utiliser ni créer de dictionnaire de concepts d'entités.
L'ISO 19110:2016 s'applique à la définition d'entités géographiques au niveau du type d'entité. Il ne s'applique pas à la représentation des instances individuelles de chaque type. Il exclut les schémas de présentation tels que spécifiés dans l'ISO 19117.
L'ISO 19110:2016 peut être utilisé comme base pour la définition de l'univers du discours modélisé dans une application particulière ou pour normaliser les aspects généraux d'entités du monde réel modélisés dans plusieurs applications.

Geografske informacije - Metodologija za objektne kataloge (ISO 19110:2016)

Ta dokument določa metodologijo za katalogizacijo vrst objektov. Ta dokument določa način organizacije vrst objektov v objektni katalog in predstavitve uporabnikom nabora geografskih podatkov. Ta dokument se uporablja za ustvarjanje katalogov vrst objektov v predhodno nekatalogiziranih domenah in za revidiranje obstoječih objektnih katalogov, kar zagotavlja skladnost z ustaljeno prakso. Ta dokument se uporablja za katalogizacijo vrst objektov, ki so predstavljeni v digitalni obliki. Njegova načela se lahko razširijo na katalogizacijo drugih oblik geografskih podatkov. Objektni katalogi so neodvisni od slovarjev konceptov o pojavih, opredeljenih v standardu ISO 19126, in jih je mogoče opredeliti brez uporabe ali izdelave slovarja konceptov o pojavih.
Ta dokument se uporablja za definicijo geografskih objektov na ravni vrste. Ta dokument se ne uporablja za predstavitev posameznih primerov vsake vrste. Ta dokument ne vključuje shem za prikaz in opisa geografskih podatkov, kot določa standard ISO 19117.
Ta dokument se lahko uporablja kot osnova za določanje na podlagi diskurza, ki se modelira v posamezni uporabi, ali za standardizacijo splošnih vidikov resničnih svetovnih značilnosti, ki se modelirajo v več kot eni uporabi.

General Information

Status
Withdrawn
Publication Date
30-Mar-2017
Withdrawal Date
29-Jun-2017
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
21-Dec-2016
Completion Date
21-Dec-2016

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SLOVENSKI STANDARD
SIST EN ISO 19110:2017
01-junij-2017
1DGRPHãþD
SIST EN ISO 19110:2006
SIST EN ISO 19110:2006/A1:2011
Geografske informacije - Metodologija za objektne kataloge (ISO 19110:2016)
Geographic information - Methodology for feature cataloguing (ISO 19110:2016)
Geoinformation - Objektartenkataloge (ISO 19110:2016)

Information géographique - Méthodologie de catalogage des entités (ISO 19110:2016)

Ta slovenski standard je istoveten z: EN ISO 19110:2016
ICS:
07.040 Astronomija. Geodezija. Astronomy. Geodesy.
Geografija Geography
35.240.70 Uporabniške rešitve IT v IT applications in science
znanosti
SIST EN ISO 19110:2017 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 19110:2017
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SIST EN ISO 19110:2017
EN ISO 19110
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2016
EUROPÄISCHE NORM
ICS 35.240.70 Supersedes EN ISO 19110:2006
English Version
Geographic information - Methodology for feature
cataloguing (ISO 19110:2016)

Information géographique - Méthodologie de Geoinformation - Objektartenkataloge (ISO

catalogage des entités (ISO 19110:2016) 19110:2016)
This European Standard was approved by CEN on 12 December 2016.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 19110:2016 E

worldwide for CEN national Members.
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SIST EN ISO 19110:2017
EN ISO 19110:2016 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 19110:2017
EN ISO 19110:2016 (E)
European foreword

This document (EN ISO 19110:2016) has been prepared by Technical Committee ISO/TC 211

“Geographic information/Geomatics” in collaboration with Technical Committee CEN/TC 287

“Geographic Information” the secretariat of which is held by BSI.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by June 2017, and conflicting national standards shall be

withdrawn at the latest by June 2017.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent

rights.
This document supersedes EN ISO 19110:2006.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 19110:2016 has been approved by CEN as EN ISO 19110:2016 without any modification.

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SIST EN ISO 19110:2017
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SIST EN ISO 19110:2017
INTERNATIONAL ISO
STANDARD 19110
Second edition
2016-12-01
Geographic information —
Methodology for feature cataloguing
Information géographique — Méthodologie de catalogage des entités
Reference number
ISO 19110:2016(E)
ISO 2016
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SIST EN ISO 19110:2017
ISO 19110:2016(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form

or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior

written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
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Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2016 – All rights reserved
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SIST EN ISO 19110:2017
ISO 19110:2016(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Conformance ............................................................................................................................................................................................................. 3

4.1 Conformance classes .......................................................................................................................................................................... 3

5 Abbreviated terms .............................................................................................................................................................................................. 3

6 Requirements .......................................................................................................................................................................................................... 4

6.1 General ........................................................................................................................................................................................................... 4

6.2 Conceptual requirements .............................................................................................................................................................. 4

6.3 XML implementation requirements ..................................................................................................................................11

6.4 XML instance document requirements ...........................................................................................................................12

Annex A (normative) Abstract test suite .......................................................................................................................................................14

Annex B (normative) Feature catalogue conceptual schema and data dictionary ............................................23

Annex C (normative) Encoding description ...............................................................................................................................................42

Annex D (normative) Management of feature catalogue registers ....................................................................................45

Annex E (informative) Feature cataloguing examples .....................................................................................................................54

Annex F (informative) Feature cataloguing concepts ......................................................................................................................65

Annex G (informative) Transformation of legacy feature catalogues .............................................................................68

Bibliography .............................................................................................................................................................................................................................70

© ISO 2016 – All rights reserved iii
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SIST EN ISO 19110:2017
ISO 19110:2016(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

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 ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,

as well as information about ISO’s adherence to the World Trade Organization (WTO) principles in the

Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.

The committee responsible for this document is ISO/TC 211, Geographic information/Geomatics.

This second edition cancels and replaces the first edition (ISO 19110:2005), which has been technically

revised. It also replaces ISO 19110:2005/Amd1:2011. Annex G explains how to transform feature

catalogues from the first edition to this revised version.
iv © ISO 2016 – All rights reserved
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SIST EN ISO 19110:2017
ISO 19110:2016(E)
Introduction

Geographic features are real-world phenomena associated with a location relative to the Earth, about

which data are collected, maintained, and disseminated. Feature catalogues defining the types of

features, their operations, attributes, and associations represented in geographic data are indispensable

to turning the data into usable information. Such feature catalogues promote the dissemination,

sharing, and use of geographic data through providing a better understanding of the content and

meaning of the data. Unless suppliers and users of geographic data have a shared understanding of the

kinds of real-world phenomena represented by the data, users will be unable to judge whether the data

supplied are fit for their purpose.

The availability of standard feature catalogues that can be used multiple times will reduce costs of data

acquisition and simplify the process of product specification for geographic datasets.

This document provides a standard framework for organizing and reporting the classification of real-

world phenomena in a set of geographic data. Any set of geographic data is a greatly simplified and

reduced abstraction of a complex and diverse world. A catalogue of feature types can never capture

the richness of geographic reality. However, such a feature catalogue should present the particular

abstraction represented in a given dataset clearly, precisely, and in a form readily understandable and

accessible to users of the data.

Geographic features occur at two levels: instances and types. At the instance level, a geographic feature

is represented as a discrete phenomenon that is associated with its geographic and temporal coordinates

and may be portrayed by a particular graphic symbol. These individual feature instances are grouped

into classes with common characteristics: feature types. It is recognized that geographic information is

subjectively perceived and that its content depends on the needs of particular applications. The needs

of particular applications determine the way instances are grouped into types within a particular

classification scheme. ISO 19109 specifies how data shall be organized to reflect the particular needs of

applications with similar data requirements.

NOTE The full description of the contents and structure of a geographic dataset is given by the application

schema developed in compliance with ISO 19109. The feature catalogue defines the meaning of the feature

types and their associated feature attributes, feature operations, and feature associations contained in the

application schema.

This document enables the multilingual description of application schemas compliant with ISO 19109. It

goes further to provide a mechanism enabling a single global description of some properties occurring

many times in an application schema and a binding of those global properties to the corresponding

feature types.

The collection criteria used to identify individual real-world phenomena and to represent them as

feature instances in a dataset are not specified in this document. Because they are not included in

the standards, collection criteria should be included separately in the product specification for each

dataset.

A standard way of organizing feature catalogue information will not automatically result in

harmonization or interoperability between applications. In situations where classifications of features

differ, this document may at least serve to clarify the differences and thereby help to avoid the errors

that would result from ignoring them. It may also be used as a standard framework within which to

harmonize existing feature catalogues that have overlapping domains.

This revision of ISO 19110 addresses issues related to the multilingual management of feature

catalogues and applies the changes documented in a previous amendment. In addition to removing

minor inconsistencies in the conceptual schemas, the amendment enhanced the mechanism ensuring

the management of global properties. The amendment also provided an XML schema implementation of

the feature catalogue conceptual schema and a management of feature catalogue registers. If the initial

conceptual schema is not a subset of the amended conceptual schema, it is possible to transform legacy

instances.
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SIST EN ISO 19110:2017
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SIST EN ISO 19110:2017
INTERNATIONAL STANDARD ISO 19110:2016(E)
Geographic information — Methodology for feature
cataloguing
1 Scope

This document defines the methodology for cataloguing feature types. This document specifies how

feature types can be organized into a feature catalogue and presented to the users of a set of geographic

data. This document is applicable to creating catalogues of feature types in previously uncatalogued

domains and to revising existing feature catalogues to comply with standard practice. This document

applies to the cataloguing of feature types that are represented in digital form. Its principles can be

extended to the cataloguing of other forms of geographic data. Feature catalogues are independent of

feature concept dictionaries defined in ISO 19126 and can be specified without having to use or create

a Feature Concept Dictionary.

This document is applicable to the definition of geographic features at the type level. This document

is not applicable to the representation of individual instances of each type. This document excludes

portrayal schemas as specified in ISO 19117.

This document may be used as a basis for defining the universe of discourse being modelled in a

particular application, or to standardize general aspects of real world features being modelled in more

than one application.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 19103, Geographic information — Conceptual schema language
ISO 19109, Geographic information — Rules for application schema
ISO 19115-1:2014, Geographic information — Metadata — Part 1: Fundamentals

ISO/TS 19115-3:2016, Geographic information — Metadata — Part 3: XML schema implementation for

fundamental concepts

ISO 19135-1:2015, Geographic information — Procedures for item registration — Part 1: Fundamentals

ISO/TS 19139:2007, Geographic information — Metadata — XML schema implementation
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
© ISO 2016 – All rights reserved 1
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SIST EN ISO 19110:2017
ISO 19110:2016(E)
3.1
designation
designator
representation of a concept by a sign which denotes it

Note 1 to entry: In terminology work, three types of designations are distinguished: symbols, appellations

and terms.
[SOURCE: ISO 1087-1:2000, 3.4.1]
3.2
feature
abstraction of real-world phenomena

EXAMPLE The phenomenon named “Eiffel Tower” may be classified with other similar phenomena into a

feature type “tower.”

Note 1 to entry: A feature may occur as a type or an instance. Feature type or feature instance should be used

when only one is meant.
[SOURCE: ISO 19101-1:2014, 4.1.11]
3.3
feature association

relationship that links instances of one feature (3.2) type with instances of the same or a different

feature type
3.4
feature attribute
characteristic of a feature (3.2)

EXAMPLE 1 A feature attribute named “colour” may have an attribute value “green” which belongs to the data

type “text”.

EXAMPLE 2 A feature attribute named “length” may have an attribute value “82,4” which belongs to the data

type “real”.

Note 1 to entry: A feature attribute has a name, a data type, and a value domain associated to it. A feature

attribute for a feature instance also has an attribute value taken from the value domain.

[SOURCE: ISO 19101-1:2014, 4.1.12]
3.5
feature catalogue

catalogue containing definitions and descriptions of the feature (3.2) types, feature attributes (3.4)

and feature relationships occurring in one or more sets of geographic data, together with any feature

operations (3.7) that can be applied

Note 1 to entry: Feature relationships include feature inheritances (3.6) and feature associations (3.3).

[SOURCE: ISO 19101-1:2014, 4.1.13]
3.6
feature inheritance

mechanism by which more specific features (3.2) incorporate structure and behaviour of more general

features related by behaviour
3.7
feature operation
operation that every instance of a feature (3.2) type may perform

EXAMPLE A feature operation upon a “dam” is to raise the dam. The results of this operation are to raise the

height of the “dam” and the level of water in a “reservoir”.
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ISO 19110:2016(E)

Note 1 to entry: Sometimes, feature operations provide a basis for feature type definition.

3.8
functional language
language in which feature operations (3.7) are formally specified

Note 1 to entry: In a functional language, feature types may be represented as abstract data types.

3.9
signature

text string that specifies the name and parameters required to invoke an operation

Note 1 to entry: It may contain optional returned parameters. This signature is usually derived from the formal

definition. This is the equivalent of the UML signature.
4 Conformance
4.1 Conformance classes

The methodology for cataloguing feature types is defined through a set of requirements for the

description of feature types. A single conformance class is defined for models meeting all the

conceptual requirements. This document presents a conceptual model for a representation of feature

type descriptions as a set of UML diagrams that satisfy this conformance class. Annex A presents the

abstract test suits for conformance classes.

A second set of requirements for XML implementation of the conceptual model are the basis for a

conformance class for XML implementation of the UML model for representation of feature types in a

feature catalogue. This implementation is based on rules defined in ISO/TS 19139 and ISO/TS 19115-3.

Annex D defines a conceptual model for a registered feature catalogue, but no corresponding XML

implementation is specified by this document.
Table 1 — Conformance classes defined by this specification

Conformance class URI Standardization target Conformance class name (implemented clause)

/conf/conceptual-model Conceptual model Conceptual model for a feature catalogue

/conf/feature-catalogue-xml XML implementation XML implementation of feature catalogue concep-

tual model

/conf/feature-cata- XML instance document Valid XML instance document for interchange of feature

logue-xml-instance catalogue content

All Conformance Class URIs are HTTP URIs, prefix ‘http://standards.iso.org/iso/19110’ to the paths in the table cell to

get the complete URI.
5 Abbreviated terms
GFC Geographic Feature Cataloguing
GFM General Feature Model
HTTP Hyper Text Transfer Protocol
IHO International Hydrographic Organization
TS Technical Specification
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ISO 19110:2016(E)
UML Unified Modeling Language
URI Uniform Resource Identifier
XML eXtensible Markup Language
6 Requirements
6.1 General

Clause 6 specifies general and specific requirements for feature catalogue information elements.

6.2 Conceptual requirements

Tables 2 to 10, 12, and 13 summarize requirements for the conceptual model for describing feature types

and their attributes, operations, and associations in a feature catalogue. Requirements are grouped into

requirements classes; each requirements class has a URI, and each requirement has a URI that is based

on the URI for the requirements class to which it is included. The dependencies column provides the URI

for any requirements class that must be met as a precondition for the requirements class.

In Tables 2 to 10 and 12 to 13, the following conventions are followed.

— The term “entity” is used to refer to model elements representing instantiable information objects

in the conceptual model. Depending on the modelling paradigm used, these may have other labels,

e.g. “object,” “class,” “element,” or “feature”.

— Inclusion of a model entity name in a requirements statement implies that entity or any subtype is

derived from that entity in a model instance.
— Property names are provided in single quotes (‘ ‘), and are all in lower case.
Table 2 — Requirements class for catalogue
Identifier http://standards.iso.org/iso/19110/1.1/req/catalogue
Target type Conceptual model
Name Core conceptual catalogue requirements for ISO 19110 feature catalogue
Dependency ISO 19115-1:2014, 6.6.2
ISO/TS 19139:2007, 7.4.4
Requirement /req/catalogue/representation

A feature catalogue shall document an abstraction of reality representing one or more

geographic features.

NOTE A feature catalogue may comply with the specifications of this document inde-

pendent of any existing set of geographic data.
Requirement /req/catalogue/abstraction
The feature type shall be the basic level of abstraction in a feature catalogue.
Requirement /req/catalogue/electronic-form
A feature catalogue shall be available in electronic form.
Requirement /req/catalogue/inheritance

A feature catalogue shall inherit all the properties and relationships defined on the abstract

CT_Catalogue class in ISO/TS 19139:2007, 7.4.4.
Requirement /req/catalogue/identification

The feature catalogue shall include identification information that includes a ‘name’, a

‘versionNumber’, a ‘versionDate’.
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ISO 19110:2016(E)
Table 2 (continued)
Requirement /req/catalogue/producer

The feature catalogue entity shall include a mandatory ‘producer’ property with exactly

one value that is an entity conforming to the content of the CI_Responsibility entity defined

by ISO 19115-1:2014, 6.6.2.
Requirement /req/catalogue/functional-language

If a functional language is used to formally define feature operations, the feature cata-

logue entity shall have a ‘functional language’ property with a text value that specifies

the language used.
Requirement /req/catalogue/identifier

If a globally unique identifier is included as a property of a feature catalogue, it shall be

named ‘identifier’ and shall have a value that is an entity conforming to the content of the

MD_Identifier entity defined by ISO 19115-1:2014, 6.6.2.
Recommendation /rec/catalogue/schema-language

To maximize the usefulness of a feature catalogue across different applications, the use of

a conceptual schema language to model feature catalogue information is recommended.

NOTE Natural-language definitions, feature-type aliases, criteria for the creation and

withdrawal of feature instances, and other semantic elements of the feature catalogue may

be included in a conceptual schema as structured comments or as attributes.
Table 3 — Requirements class for base content
Identifier http://standards.iso.org/iso/19110/1.1/req/base-content
Target type Conceptual model
Name Core conceptual base content requirements for ISO 19110 feature catalogue
Dependency http://standards.iso.org/iso/19110/req/catalogue
Requirement /req/base-content/minimum
A feature catalogue shall describe at least one feature type.
Requirement /req/base-content/feature-type-names

A feature type shall be identified by exactly one ‘type name’ that is unique in the scope of

the containing feature catalogue.

The ‘type name’ value shall consist of an optional ‘codespace’ property that specifies a

namespace, and a string value that provides the name.
Requirement /req/base-content/feature-type-is-abstract

A feature type shall have a mandatory ‘is abstract’ property with a Boolean value.

Requirement /req/base-content/feature-properties

Properties of a feature type shall be linked to the feature type with the role ‘carrierOf-

Characteristics’.

Properties of a feature type shall be categorized as one of feature attribute, feature oper-

ation, or association role.
Requirement /req/base-content/property-type-names

All property types (attribute, operation, or association role) shall be identified by a single

‘type name’ that is unique within the scope of the feature type (local properties) or feature

catalogue (global properties) that contains the property definition.

The ‘type name’ value shall consist of an optional ‘codespace’ property that specifies a

namespace, and a string value that provides the name.
Requirement /req/base-content/all-type-definitions

The feature catalogue shall include definitions of all feature types and property types

(attribute, operation, or association role) included in the model.
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