72
3 Non-geometry standards
3.2.1 Services (ISO 19119)
The Information Technology community decomposes computer software systems
by using five different viewpoints. One of them, the computational viewpoint, addresses the services. The ISO 19119 (Services) provides the framework to structure
services in the context of geographie information. In the case of geomatics, services
may be pure Information Technology services like querying a database or specific
geographie information services such as finding a location in a Co ordinate Reference
System.
Services are defined as the capability to provide for manipulating, transforming,
managing, or presenting information. A special case is the service interfaces that are
the boundaries across which services are invoked and across which data is passed between a service and an application, extemal storage device, communications network, or a human being. Following these definitions, the ISO 19100 standards fall
into two categories: infrastructure standards and service standards. Infrastructure
standards are guidelines that are applicable for all other standards. Examples are the
ISO 19101 (Reference model) and ISO 19104 (Terminology). With few exceptions,
all standards with numbers equal or higher than ISO 19107 are service standards.
The ISO 19101 (Reference model) sets forth the conceptual modelling, the domain reference model and the architectural reference model. The last embraces the
IT -services as defined in the Reference Model of Open Distributed Processing (RMODP) and standardises the Extended Open System Environment Reference Model
(EOSE-RM) for the specific services for geographie information. The general Open
System Environment Reference Model (OSE-RM) is standardised in the ISO/IEC
TR 14252.
Figure 3.9 summarises all IT- and geographie information services. Without
c1aiming completeness, the diagram also relates the ISO 19100 standards to the three
service categories of geographie information. The acronyms are explained below.
3 Non-geometry standards
3.2.1 Services (ISO 19119)
The Information Technology community decomposes computer software systems
by using five different viewpoints. One of them, the computational viewpoint, addresses the services. The ISO 19119 (Services) provides the framework to structure
services in the context of geographie information. In the case of geomatics, services
may be pure Information Technology services like querying a database or specific
geographie information services such as finding a location in a Co ordinate Reference
System.
Services are defined as the capability to provide for manipulating, transforming,
managing, or presenting information. A special case is the service interfaces that are
the boundaries across which services are invoked and across which data is passed between a service and an application, extemal storage device, communications network, or a human being. Following these definitions, the ISO 19100 standards fall
into two categories: infrastructure standards and service standards. Infrastructure
standards are guidelines that are applicable for all other standards. Examples are the
ISO 19101 (Reference model) and ISO 19104 (Terminology). With few exceptions,
all standards with numbers equal or higher than ISO 19107 are service standards.
The ISO 19101 (Reference model) sets forth the conceptual modelling, the domain reference model and the architectural reference model. The last embraces the
IT -services as defined in the Reference Model of Open Distributed Processing (RMODP) and standardises the Extended Open System Environment Reference Model
(EOSE-RM) for the specific services for geographie information. The general Open
System Environment Reference Model (OSE-RM) is standardised in the ISO/IEC
TR 14252.
Figure 3.9 summarises all IT- and geographie information services. Without
c1aiming completeness, the diagram also relates the ISO 19100 standards to the three
service categories of geographie information. The acronyms are explained below.