Transformatsioonireegleid

Transformatsioonireegleid is an Estonian term meaning "transformation rules." In information technology, these rules refer to predefined guidelines or algorithms that dictate how data, documents, or code are converted from one format or structure to another. They are fundamental in data integration, data migration, and process automation, ensuring that the transformation maintains data integrity, adheres to compliance standards, and achieves the desired output format.

In data warehousing, transformatsioonireegleid are applied during the ETL (Extract, Transform, Load) process. The extraction phase pulls raw data from source systems, after which transformation rules clean, validate, join, and reshape the data before loading it into target data marts or cubes. Common operations include type casting, date normalization, aggregation, de-duplication, and field mapping.

In software development, transformation rules can define how code is refactored, or how domain models are converted to database schemas. Model-Driven Architecture and Model-Driven Engineering frameworks rely heavily on such rules for automating code generation.

Formal specifications for transformation rules are often expressed in declarative languages such as SQL, XSLT for XML, or domain-specific languages (DSLs) tailored to the problem domain. Validation of transformation rules is typically performed through test cases, property-based testing, or formal verification to guarantee correctness.

Industrially, transformation rules support regulatory compliance by ensuring consistent data representation across systems, and they enable efficient business process re-engineering by allowing rapid adaptation of legacy data to modern platforms.