Action decide Data Model with respect to Fedora 3
- Assigned
- KFC + ABR + EK
- Prev assigned
- Tasks adressed
- ["TaskA.2.2"],["TaskA.2.1"]
- Time estimated
- 8md
- Time used
- 6md
- Priority
- 6
- Status
- In progress
- Iteration
- 11
- Notes
The Fedora 3 Data Model seems to indicate a different datamodel to what we expected, and this has impact on how we should define the final DOMS data model. This needs to be decided, and soon, so Mjølner knows how our final datamodel looks.
The issues we have identified so far:
- Inheritance is not implemented, but two equally useful ways present themselves. Choosing the one that Fedora will use will help our system gain acceptance.
- Arbitrary xml in DS-COMPOSITION, instead of SCHEMABINDINGS
- rdf:type and a OWL Full to describe the relationsship model
- Policy Relationships
- The schemas for the Base objects datastreams must be decided and formalised.
The purpose of this action is to establish how key concepts, mainly inheritance, should be implemented, and formalise the DOMS base collection. We should start manipulating the Fedora developers into accepting our wishes, mainly by emails to their mailinglists.
The product should be a datamodel description, and the foxml object for the Base collection.
Progress
DOMS Data model
DS-COMPOSITE
We use DS-COMPOSITE to store arbitrary metadata, as proposed. Fedora does not choke on it, and preserves it faithfully. A new schema for DS-COMPOSITE have been defined, and a schema for the elements we embed in it have also been defined.
Schema validation
There are objects in the tape collection, that need a subset of the qualified dublin core metadata set. This forced us to concretize how we intended schema validation to work.
View datastream
Have not been updated. There is a serious issue with the way we have chosen to implement it:
In order for incremental updates of a search index to be made, we must inform the search tool each time a "post" in the index is changed. A "post" is defined as the view of a main object. If one of the objects in this view is changed, it has no way of finding its main object, and thus we cannot inform the search index that this "post" is changed.
This issue is still outstanding.
DOMS owl ontology
The Fedora OWL ontology system we will use have been defined in FedoraOntology. Beside the lack of support for DataTypeProperties at current, we believe that it has no loose ends.
TODO
The TODO list from [:ActionDataModelTDRRequirements:] has been added to [:TaskA.2.3AnalysisDocument:].
Checklist For Working On An Action
The Life Cycle of an Action:
Assign people for action definition: Done at start of iteration status meeting. Fill out Assigned
Define the action: Describe information about what is to be done and how. Fill out Tasks Addressed and Time Estimated.
Review the definition: Get another project group member to review the action definition, and update it.
Assign people for action implementation: Done by project manager, usually the same persons who wrote the definition. Fill out Assigned and Prev assigned if new persons are assigned.
Implement the action: See details below
Review the action: Get another project group member to review what is implemented (code and documentation), and update it.
Finish the action: Change the status to "Finished" and update the "time used" field on the action page.
Please make sure that you address the below issues, when working on an action:
- Update the state of the action to "In Progress" when you start working on it.
- Check if the tasks addressed by this action have their status set to "In Progress". If that is not the case, then change the state of them.
Keep track of how much time that has been spent working on the action. If it addresses more than one task, then make a note on the action page about how much of the elapsed time that has been spent on the individual tasks. Hint: Continually updating the "Time used" field will make it easier for you.
- Update the "Progress History" and documentation pages of each task addressed by this action when appropriate. This depends on the situation, but in general, the task pages should hold all important related information about the work done, experiences gathered, identified requirements and so on.