NGDA Archive Data Model
This is the NGDA archive data model and ingest API. Features:
- Representation of archival objects as directory trees of files, and literal storage as such.
- Two types of directories that distinguish between 1) decomposition of objects/components into subcomponents, and 2) grouping of equivalent, alternative representations of objects/components.
- Explicit association of objects and object components with "definitions" (format specifications and other kinds of specifications that define semantics and interpretation), which are themselves represented as archival objects.
- Inter-object relationships.
- Object- and component-level lineage tracking.
- An XML manifest for archival objects that records the above information.
- Ingest templates, and association of objects with templates.
- An HTTP-based ingest API that supports one-time, incremental, and bulk ingest, and both template-based and non-template-based ingest.
- Support for archive self-description, including representation of the manifest and template schemas as archival objects.
Each of the following schemas is available in three schema languages: RELAX NG (compact syntax and XML syntax) and XML Schema, respectively. The first is the preferred and most readable format.
- Schemas
-
RELAX NG
(compact)RELAX NG
(XML)XML Schema manifest manifest.rnc manifest.rng manifest.xsd template template.rnc template.rng template.xsd ingest ingest.rnc ingest.rng ingest.xsd format TBD TBD TBD
- Additional specifications
- Identifiers as history
Standard inter-object relationships
Usage guidelines
last modified 2009-01-27 11:12