Check out our joint presentation with MOH Holding at the 2012 IHTSDO Showcase in Stockholm.

This presentation demonstrates the functionality provided by the Logical Model Designer (LMD) and Snow Owl tools, which enables terminology to be bound to the Singapore Logical Information Model.


A critical enabler in the journey towards semantic interoperability in Singapore is the Singapore “˜Logical Information Model’ (LIM). The LIM is a model of the healthcare information shared within Singapore, and is defined as a set of reusable “˜archetypes’ for each clinical concept (e.g. Problem/Diagnosis, Pharmacy Order).   These archetypes are then constrained and composed into “˜templates’ to support specific use cases.

The Singapore LIM harmonises the semantics of the information structures with the terminology, using multiple types of terminology bindings, including semantic, value domain and constraint bindings. Value domain bindings are defined to both national “˜reference terminology’ (used for querying nationally-collated data), as well as to a variety of “˜interface terminologies’ used within local clinical systems (required to enforce conformance-compliance rules over message specifications generated from the LIM). To support the diversity of pre-coordination captured in local interface terms, “˜design patterns’ are included in the LIM, based on the SNOMED CT concept model. These design patterns represent a logical model of meaning for a specific concept, and allow more than one split between the information model and the terminology model to be represented in a semantically-consistent manner.

This presentation will demonstrate the “˜Logical Model Designer’ (LMD) – an Eclipse-based tool that is being used to maintain Singapore’s Logical Information Model. A number of features of the LMD tooling will be demonstrated, with a specific focus on how the information structure is bound to the terminology via an interface to the Snow Owl platform. Value Domains are defined as reference sets within Snow Owl and then linked to the information structures defined in the LMD.