SIST EN ISO 12967-3:2011

SLOVENSKI STANDARD
SIST EN ISO 12967-3:2011
01-julij-2011
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SIST EN 12967-3:2008
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Health informatics - Service architecture - Part 3: Computational viewpoint (ISO 12967-
3:2009)
Medizinische Informatik - Servicearchitektur - Teil 3: Verarbeitungssicht (ISO 12967-
3:2009)
Informatique de santé - Architecture de service - Partie 3: Point de vue informatique (ISO
12967-3:2009)
Ta slovenski standard je istoveten z: EN ISO 12967-3:2011
ICS:
35.240.80 Uporabniške rešitve IT v IT applications in health care
zdravstveni tehniki technology
SIST EN ISO 12967-3:2011 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 12967-3:2011

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SIST EN ISO 12967-3:2011


EUROPEAN STANDARD
EN ISO 12967-3

NORME EUROPÉENNE

EUROPÄISCHE NORM
March 2011
ICS 35.240.70 Supersedes EN 12967-3:2007
English Version
Health informatics - Service architecture - Part 3: Computational
viewpoint (ISO 12967-3:2009)
Informatique de santé - Architecture de service - Partie 3: Medizinische Informatik - Servicearchitektur - Teil 3:
Point de vue informatique (ISO 12967-3:2009) Verarbeitungssicht (ISO 12967-3:2009)
This European Standard was approved by CEN on 10 March 2011.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12967-3:2011: E
worldwide for CEN national Members.

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SIST EN ISO 12967-3:2011
EN ISO 12967-3:2011 (E)
Contents Page
Foreword .3

2

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SIST EN ISO 12967-3:2011
EN ISO 12967-3:2011 (E)
Foreword
The text of ISO 12967-3:2009 has been prepared by Technical Committee ISO/TC 215 “Health informatics” of
the International Organization for Standardization (ISO) and has been taken over as EN ISO 12967-3:2011 by
Technical Committee CEN/TC 251 “Health informatics” the secretariat of which is held by NEN.
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 September 2011, and conflicting national standards shall be
withdrawn at the latest by September 2011.
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 12967-3:2007.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 12967-3:2009 has been approved by CEN as a EN ISO 12967-3:2011 without any
modification.

3

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SIST EN ISO 12967-3:2011

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SIST EN ISO 12967-3:2011

INTERNATIONAL ISO
STANDARD 12967-3
First edition
2009-08-15

Health informatics — Service
architecture —
Part 3:
Computational viewpoint
Informatique de santé — Architecture de service —
Partie 3: Point de vue informatique




Reference number
ISO 12967-3:2009(E)
©
ISO 2009

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SIST EN ISO 12967-3:2011
ISO 12967-3:2009(E)
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ii © ISO 2009 – All rights reserved

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SIST EN ISO 12967-3:2011
ISO 12967-3:2009(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.2
3 Terms and definitions .2
4 Abbreviations.2
5 Methodological principles .2
5.1 General.2
5.2 Clusters of objects .2
5.3 Computational language.3
5.4 The computational objects and interfaces .4
5.5 Interaction.5
6 General characteristics of the model .5
6.1 The two types of computational objects for handling the information .5
6.2 The basic methods .6
6.2.1 General requirement.6
6.2.2 “Add” basic methods.7
6.2.3 “Update” basic methods.8
6.2.4 “Delete” basic methods.10
6.2.5 “Detail” basic methods.11
6.2.6 “List” basic methods .13
6.3 General purpose interface.15
6.3.1 General.15
6.3.2 List of methods.15
6.3.3 Behavioural specifications.16
6.4 The complex interfaces of the workflow related computational objects.16
6.4.1 General.16
6.4.2 Complex services managing healthcare workflows .16
6.4.3 Interfaces supporting the “Subject of care workflow” .16
6.4.4 Interfaces supporting the “Clinical information workflow” .18
6.4.5 Interfaces supporting the “Activity management workflow”.19
6.4.6 Behavioural specifications, common to the complex services.22
6.5 Common requirements of the interfaces .23
6.5.1 Interface documentation and organization.23
6.5.2 Naming criteria.23
6.5.3 Data types.24
6.5.4 Structure and organization of the interfaces.24
Annex A (informative) Examples of services .25
Bibliography.27

© ISO 2009 – All rights reserved iii

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SIST EN ISO 12967-3:2011
ISO 12967-3:2009(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 12967-3 was prepared by Technical Committee ISO/TC 215, Health informatics, based on the European
Standard EN 12967-3:2007 with minor editorial amendments.
ISO 12967 consists of the following parts, under the general title Health informatics — Service architecture:
⎯ Part 1: Enterprise viewpoint
⎯ Part 2: Information viewpoint
⎯ Part 3: Computational viewpoint
iv © ISO 2009 – All rights reserved

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SIST EN ISO 12967-3:2011
ISO 12967-3:2009(E)
Introduction
ISO 12967 is a multi-part standard that provides guidance for the description, planning and development of
new systems as well as for the integration of existing information systems, both within one enterprise and
across different healthcare organizations through an architecture integrating the common data and business
logic into a specific architectural layer (i.e. the middleware), distinct from individual applications and accessible
throughout the whole information system through services, as shown in Figure 1.
Applications
Scope of the
standard
Middleware of objects
integrating common data and common business logic

Figure 1 — Scope of this International Standard
[10] [11][12][13]
The overall architecture is formalized according to ISO/IEC 10746 (all parts) and is therefore
structured through the following three viewpoints.
a) Enterprise viewpoint: specifies a set of fundamental common requirements at enterprise level with
respect to the organizational purposes, scopes and policies that must be supported by the information
and functionality of the middleware. It also provides guidance on how one individual enterprise (e.g. a
regional healthcare authority, a large hospital or any other organization where this model is applicable)
can specify and document additional specific business requirements, with a view to achieving a complete
specification, adequate for the characteristics of that enterprise.
Enterprise viewpoint is specified in ISO 12967-1.
b) Information viewpoint: specifies the fundamental semantics of the information model to be implemented
by the middleware to integrate the common enterprise data and to support the enterprise requirements
formalized in ISO 12967-1. It also provides guidance on how one individual enterprise can extend the
standard model with additional concepts needed to support local requirements in terms of information to
be put in common.
Information viewpoint is specified in ISO 12967-2.
c) Computational viewpoint: specifies the scope and characteristics of the services that must be provided by
the middleware for allowing access to the common data as well as the execution of the business logic
supporting the enterprise processes identified in the information viewpoint and in ISO 12967-1. It also
provides guidance on how one individual enterprise can specify additional services needed to support
local specific requirements in terms of common business logic to be implemented.
Computational viewpoint is specified in this part of ISO 12967.

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SIST EN ISO 12967-3:2011

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SIST EN ISO 12967-3:2011
INTERNATIONAL STANDARD ISO 12967-3:2009(E)

Health informatics — Service architecture —
Part 3:
Computational viewpoint
1 Scope
HISA specifies fundamental requirements for 'information infrastructure' and healthcare specific middleware
services.
This part of ISO 12967 specifies the fundamental characteristics of the computational model to be
implemented by a specific architectural layer of the information system (i.e. the middleware) to provide a
comprehensive and integrated interface to the common enterprise information and to support the fundamental
business processes of the healthcare organization, as defined in ISO 12967-1. The computational model is
specified without any explicit or implicit assumption about the physical technologies, tools or solutions to be
adopted for its physical implementation in the various target scenarios. The specification is nevertheless
formal, complete and non-ambiguous enough to allow implementers to derive an efficient design of the system
in the specific technological environment which will be selected for the physical implementation.
The computational model provides the basis for ensuring consistency between different engineering and
technology specifications (including programming languages and communication mechanisms) since they
must be consistent with the same computational object model. This consistency allows open inter-working and
portability of components in the resulting implementation.
This specification does not aim at representing a fixed, complete, specification of all possible interfaces that
may be necessary for any requirement of any healthcare enterprise. It specifies only a set of characteristics –
in terms of overall organization and individual computational objects, identified as fundamental and common
to all healthcare organizations, and that are satisfied by the computational model implemented by the
middleware.
Preserving consistency with the provisions of this part of ISO 12967, physical implementations shall allow
extensions to the standard computational model in order to support additional and local requirements.
Extensions shall include both the definition of additional properties in the objects of the standard model and
the implementation of entirely new objects.
Also this standard specification shall be extendable over time according to the evolution of the applicable
standardization initiatives. The specification of extensions shall be carried out according to the methodology
defined in Clause 7 of ISO 12967-1:2009, which identifies a set of healthcare common information services,
describing their need and the methodology through which they will be used. These are only the minimal
identifiable set of services according to the needs of the healthcare enterprise, and constituting the
"middleware" platform (i.e. integration platform) to serve as the basis for healthcare applications, e.g. EHR or
patient administration.
© ISO 2009 – All rights reserved 1

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SIST EN ISO 12967-3:2011
ISO 12967-3:2009(E)
2 Normative references
The following referenced documents are indispensable for the application 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 12967-1:2009, Health informatics — Service architecture — Part 1: Enterprise viewpoint
ISO 12967-2:2009, Health informatics — Service architecture — Part 2: Information viewpoint
3 Terms and definitions
For the purposes of this document the following terms and definitions apply.
3.1
interface
abstraction of the behaviour of an object which consists of a subset of the possible interaction mechanisms of
that object, together with the set of constraints when that interaction occurs
3.2
computational object
object as seen in a computational viewpoint representing the functional decomposition of a system showing a
state and behaviour as well as interactions through interfaces with other computational objects
4 Abbreviations
EHR Electronic Health Record
HISA Health Informatics Service Architecture
ODP Open Distributed Processing
UML Unified Modelling Language
5 Methodological principles
5.1 General
This part of ISO 12967 encompasses the computational viewpoint, which is concerned in answering HISA
middleware design aspects through the functional decomposition of the system into a set of computational
objects that interact at interfaces, also enabling distribution. The Health Informatics Service Architecture will
thus be further specified in terms of computational objects, which manage information and provide services,
and their interfaces, starting from the clusters of objects identified in ISO 12967-1 and further detailed in
ISO 12967-2.
5.2 Clusters of objects
ISO 12967-1 has identified the scope, need for, and use of the HISA standard by both developers and end
users. It has described the scope of the business objects from the organization's viewpoint, by summarising
the related user activities and requirements through natural language. During this process the main healthcare
common clusters of objects have been identified:
1) Subject of care objects
These objects handle the information necessary for supporting the users’ activities identified in the
“Subject of Care workflow” of ISO 12967-1.
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SIST EN ISO 12967-3:2011
ISO 12967-3:2009(E)
2) Activity management objects
These objects handle the information necessary for supporting the users’ activities identified in the
“Activity Management workflow” of ISO 12967-1.
3) Clinical information objects
These objects handle the information necessary for supporting the users’ activities identified in the
“Clinical Information workflow” of ISO 12967-1.
4) Users and authorization objects
These objects handle the information necessary for supporting the users’ activities related to the
management of users and authorizations, as identified in ISO 12967-1.
5) Resources objects
These objects handle the information necessary for supporting the users’ activities related to the
management of resources, as identified in ISO 12967-1.
6) Classification objects
These objects handle the information necessary for supporting the users’ activities related to the
management of classifications, coding criteria and dictionaries, as identified in ISO 12967-1.
7) Messaging objects
These objects handle the information necessary for supporting the structuring of data and the
communications with other systems through messaging mechanisms, as identified in ISO 12967-1.
ISO 12967-2 has formalized the conceptual model of the information being manipulated by the services,
arising from the textual descriptions contained in ISO 12967-1. For each of the clusters of objects, an
information model composed of information objects has been identified in ISO 12967-2.
This part of ISO 12967 defines the computational model, composed of computational objects, capable of
meeting the requirements described in ISO 12967-1. It is necessary here to identify its relationship to the
information model, and the interfaces or access mechanisms it provides to access the information handled by
the system, which below are also referred to as methods or services.
The individual methods provided by the computational objects are described illustrating how they allow actual
access to the information handled by the system (identifying the interfaces, the constraints, as well as which
information of the underlying overall information model is accessed), and eventual parallel actions to be taken.
5.3 Computational language
This part of ISO 12967 is directly concerned with the distribution of processing but not with the interaction
mechanisms that enable distribution to occur. The computational specification decomposes the system into
objects performing individual functions and interacting at well-defined interfaces.
The heart of the computational language is the computational object model, which constrains the
computational specification by defining:
⎯ form of interface that an object can have;
⎯ the way the interfaces can be bound and the forms of interaction which can take place at them;
⎯ actions an object can perform, in particular the creation of new objects and interfaces.
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SIST EN ISO 12967-3:2011
ISO 12967-3:2009(E)
5.4 The computational objects and interfaces
The computational objects provide the interfaces through which it is possible to access and manipulate the
information managed by the information objects described in the information viewpoint. Each cluster itself can
be seen as a computational object, providing interfaces that comprise all interfaces of the objects belonging to
such cluster. The computational objects are defined at the level of the HISA object.
For each cluster of objects there will be a set of computational objects providing interfaces allowing the
management of the common information and business logic relevant to the organization. Two types of
computational object are foreseen per cluster:
⎯ basic computational objects deriving directly from the corresponding information object (i.e. one
computational object per information object);
⎯ complex, higher-level computational objects providing interfaces achieving higher-level complex business
logic.
Thus, the majority of the computational objects will be derived directly from the corresponding information
objects. The further higher-level computational objects also envisaged provide interfaces achieving higher-
level complex business logic on possibly multiple information objects within the same operation. Such more
complex business logic is described in ISO 12967-1 and has to do with the main workflow processes
(i.e. patient management, activity management, etc.).
NOTE The term patient is used in this specification as a synonym of subject of care as has been done in the other
parts of ISO 12967.
The basic computational objects, corresponding one to one to the information objects, will be equipped with
standard lower-level basic interfaces having the scope of adding, updating and deleting – in short maintaining,
listing, and getting one instance of the main classes described in the information viewpoint. These basic
methods allow the access to and the manipulation of each element of the underlying model and secure the
openness of the system.
Figure 2 shows an example.
Get List of.
Get Full Data of one.
Update one.

Figure 2 — Example of "basic services"
NOTE 1 The actual basic services that shall be available for HISA objects are detailed in 6.2.
The higher-level computational objects implement more complex business transactions on the objects of the
information model, simplifying and ensuring consistency of developments and building common fundamental
procedures of the organization.
EXAMPLES:
Patient/person area, including registering a person, patient administration, merging patient identifiers, period of care, etc.;
Activity management and life cycle, including requests, planning, booking, etc.;
Clinical and EHR, including terminologies, classifications, problem-orientation, etc.;
Resource management, including standard usages, etc.
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SIST EN ISO 12967-3:2011
ISO 12967-3:2009(E)
relative to
relative to
Person
Person
SubjectOfCare Agent
SubjectOfCare Agent
? ccaareredd by by
HealthcareProvider
HealthcareProvider
ClinicalInformation
ClinicalInformation

Figure 3 — Example of "complex services"
NOTE 2 The actual complex services that shall be available for HISA objects are detailed in 6.4.
The HISA middleware also provides a set of interfaces relating to functionalities of general utility for the
management of the overall system, with respect to the execution of particular functionalities. These services
do not pertain to any specific middleware component, and are related to general-purpose issues like session
management (logging in and out of the system, setting system variables, etc.), transaction management, etc.
These services will be provided by at least a further computational object equipped with appropriate methods,
namely the general purpose interface.
5.5 Interaction
Three types of interaction are envisaged in ODP: signals, operations and flows. Signals are single actions
...