A resource package is a means of packaging any maintainable set of DDI metadata for referencing as part of a study unit or group. A resource package structures materials for publication that are inten [..]

An API (or Application Programming Interface) is a language and message format used by an application program to communicate with the operating system or some other control program such as a database [..]

Archives consist of records that have been selected for permanent or long-term preservation on grounds of their enduring cultural, historical, or evidentiary value. As a verb, archive means to store r [..]

Catalogues contain sets of metadata entities, identifiers, and descriptions of associated items included in a registry. Registries can be thought of as smart catalogues with enhanced functionality whi [..]

A document that provides information on the structure, contents, and layout of a data file.

The term community is used to identify any grouping of personal or organizational entities, at different levels of formal organization, that are considering or undertaking implementation of DDI. Examp [..]

Broadly speaking, a CV can range from a short list of clearly defined, mutually exclusive, and exhaustive terms, which are the only choices for usage in a specific context (e.g., populating certain DD [..]

A structured model of how one list of items maps into a related list of items.

From the Latin “to care”

The Data Documentation Initiative (DDI) is an effort to create an international standard for describing data from the social, behavioral, and economic sciences. Expressed in XML, the DDI metadata spec [..]