vastavuskeemilistele

Vastavuskeemilised (plural of vastavuskeemiline) are a class of formal documents used in the field of information science and data management to describe the correspondence between two or more data models, databases, or information systems. The term originates from the Estonian words "vastavus," meaning correspondence or compliance, and "keemiline," meaning schematic or related to a chemical structure; together they denote a schematic mapping that ensures compatibility across disparate systems.

A vastavuskeemiline typically includes a list of source entities, target entities, and the transformation rules or mapping functions that link them. It may also specify constraints, data type conversions, and semantic equivalences that must be preserved during integration. These documents are crucial in environments where data exchange occurs between heterogeneous platforms, such as in enterprise data warehouses, inter‑governmental data sharing initiatives, or the migration of legacy systems.

The creation of vastavuskeemilised follows standard methodology: identifying source and target schemas, defining mapping rules (often with formal languages like XML Schema Mapping Language or RDF Mapping Language), and validating the mapping through test data sets. Many organizations maintain repositories of vastavuskeemilised to support repeatable data integration processes.

In practice, vastavuskeemilised enable accurate data transformation, reduce duplication of effort, and improve traceability of changes across system upgrades. They are also considered best practice in data governance frameworks and are frequently referenced in standards such as ISO/IEC 11179 for metadata registries.