DocumentMetadata Schema
Alias: dmd
Version: 1.0.0
Metadata from a Document Management System
This schema contains classes serving as the common layer for implementations capturing metadata about persistent sets of information from Common Data Environments (CDE). This schema is meant to be the place to standardize metadata according to ISO 19650:2018 - Organization and digitization of information about buildings and civil engineering works, including building information modelling (BIM) - Information management using building information modelling.
Table of contents
Entity Classes
DocumentLink (Document link) EntityClass 
Link to a named persistent set of information, retrievable from within a file, system or application storage hierarchy.
Base Class: BisCore:RepositoryLink
Instances of DocumentLink are typically contained in the RepositoryModel of an iModel. Each specific Common Data Environment (CDE) solution shall use an instance of CodeSpec and DocumentLink.CodeValue identifiers properly setup to ensure uniqueness in such model.
Other metadata attributes specific to a CDE solution can be introduced via a subclass of DocumentLink or aspect-classes associated to it.
Equivalent to a link to an ISO 19650 - Information Container.
Properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| CodeValue | Unique Human-readable identifier for the document. | string | |
| Suitability | Meta-data describing the status code of the content of the document. | string | |
| Revision | Meta-data describing the version code of the content of the document. | string |
Inherited properties
| Name | Description | Type | Extended Type |
|---|---|---|---|
| Model | The bis:Model that contains this bis:Element. | navigation | |
| LastMod | The last modified time of the bis:Element. This is maintained by the core framework and should not be set directly by applications. | dateTime | |
| CodeSpec | The CodeSpec property identifies the bis:CodeSpec used to generate and validate the code value for this bis:Element. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| CodeScope | The CodeScope property identifies the bis:Element that provides the uniqueness scope for the code value. The combination of CodeSpec, CodeScope, and CodeValue properties must be unique for each bis:Element instance. | navigation | |
| UserLabel | An optional friendly name given by the user (as opposed to the formal name stored in the CodeValue property). | string | |
| Parent | The parent bis:Element that owns this bis:Element. | navigation | |
| FederationGuid | The GUID used to federate this bis:Element across repositories. | binary | BeGuid |
| JsonProperties | A string property that users and/or applications can use to persist ad hoc JSON values. | string | Json |
| Url | A URL pointing to an external resource. | string | URI |
| Description | A human-readable description of the URL | string | |
| RepositoryGuid | A GUID that identifies the external repository. | binary | BeGuid |
| Format | The format of the external repository. | string |
Last Updated: 21 November, 2022