Skip to content
The suite of DDI Alliance products has been formally recognized as an international standard through the publication of ISO/PAS 25955:2026 -- Learn more
  • There are no suggestions because the search field is empty.

SDTL (Structured Data Transformation Language)

RDF Namespace: http://rdf-vocabulary.ddialliance.org/sdtl

SDTL User Guide - primary documentation and usage source

 

 Supports Activities

  • Generate key machine-actionable metadata on production processes for inclusion in DDI and other
  • Capture transformation processes for provenance purposes
  • Capture a metadata life cycle that parallels the data life cycle
  • Capture processing information in a structure that can be used to create syntax for a range of statistical packages
 

Download current version

 

Learn more about specific versions:

 

Structured Data Transformation Language (SDTL) is an independent intermediate language for representing data transformation commands. Statistical analysis packages (e.g., SPSS, Stata, SAS, and R) provide similar functionality, but each one has its own proprietary language. SDTL consists of JSON schemas for common operations, such as RECODE, MERGE FILES, and VARIABLE LABELS. SDTL provides machine-actionable descriptions of variable-level data transformation histories derived from any data transformation language. Provenance metadata represented in SDTL can be added to documentation in DDI and other metadata standards.