Prior to releasing a SNOMED CT extension or edition, a series of validation checks should be performed to ensure that the package is ready for release. Table 220.127.116.11-1 below summarizes the different types of validation tasks and provides some examples of checks that can be performed prior to a release.
To validate that the SNOMED CT distribution files conform structurally to the specification of the associated file type, and that the rows and columns contain values of an appropriate data type.
To test assertions about the content of SNOMED CT data files, with respect to their release type (i.e. Full, Snapshot or Delta). This involves comparing data files for the prospective release with those of the most recently published previous release.
To test file constraints and interfile dependencies (i.e. assertions about the integrity of data within and between SNOMED CT data files). This involves testing primary and foreign keys, and the cardinality of references between files. For performance reasons, testing may be limited to the set of concepts that have changed in some way in the prospective release, and components associated with them.
To test assertions about the integrity of SNOMED CT components. In this kind of validation, the content of each file is tested against the editorial principles and logical design of SNOMED CT.