Datascheman
Datascheman are formal descriptions of the structure of data used by information systems. They specify what data can be stored, the data types and constraints that apply to each field, and how data elements relate to one another. By codifying structure, datascheman support data validation, storage optimization, and consistent data interpretation across applications and services.
Datascheman can apply at different levels. A conceptual schema outlines high-level entities and relationships without implementation
Common schema formats and standards include XML Schema (XSD), JSON Schema, YAML-based schemas, and binary formats
Datascheman serve multiple purposes: they enable data validation and quality control, support data governance and metadata
In practice, the term datascheman covers both the design artifacts created during data modeling and the runtime