About VraCoreElementSet
VRA Core is a semantically appropriate schema for describing art and artifacts. Since it was conceived as an XML standard (not strictly a flat list of fields), some elements have hierarchical sub-componenets. For example, a work may have several agents involved in its production, and each agent has a name as well as a role, culture, birth date, and, as the case may be, a death date. The VraCoreElementSet plugin creates a table for agents so that a user may enter this data separately. Then in the Edit Item form, the user may select VRA Core agents from a drop down menu restricted by the records in the agents table. Items may also be exported to schema-compliant VRA Core XML.
Download
Installing and Configuring
- Checkout from svn or download/extract zipped package to omeka/plugins (see Installing_a_Plugin).
- Install VraCoreElementSet on the Settings->Plugins page.
- Agents and associated metadata may be entered by clicking on the VRA Core Agents tab in the administrative section of Omeka.
- The VRA Core Element Set fields will be available when creating or editing items. Data entered into VRA Core fields will be duplicated to appropriate Dublin Core fields, if applicable. The Agent field in the form is restricted to a drop-down menu of values in the agent table.
Notes on Use
If an item contains one or more VRA Core fields, the crosswalk to map VRA Core to Dublin Core is executed. DC fields are removed before this process begins, so it is important to note that if all VRA Core fields are removed from an item in an edit, corresponding DC fields will not be removed. If a user wishes to use VRA Core to describe an item, it is not possible for the user to additionally enter Dublin Core metadata manually since the DC fields are removed before the VRA Core-to-Dublin Core crosswalk. If the VraCoreElementSet plugin is removed the item's Dublin Core fields are retained. In summation, only use VRA Core or Dublin Core to describe an item--do not mix and match metadata standards.
