Glossary

Document

• A document is a file containing social science metadata expressed as DDI Lifecycle or DDI Codebook with or without OAI-PMH 2.0 GetRecord envelope.
• A document is the subject of validation.

Profile

• A profile holds a set of constraints.
• A profile is itself a document.

Constraint

• A constraint is a requirement a document satisfies or violates.
• A constraint is expressed as XPath location path together with needed properties.
• Within the context of a document, a constraint builds validators.

Validation Gate

• A validation gate holds a set of constraint types and serves as validation executor.
• A constraint is ignored if its constraint type is not part of the validation gate.
• CMV defines four, hierarchically structured validation gates: Basic, Standard, Extended and Strict.

Validator

• A validator is called by a validation gate to answer the question if the underlying constraint is satisfied or violated.