Groups - Proposal - Containment and Enterprise Data Models (SDO-EnterpriseDataModel.doc) uploaded

[blaise.doughan@oracle.com]

Hello All,

I have uploaded a new version of the proposal.  This version contains an
example of how SDO containment metadata can be derived from JPA entities.

To see the change bars in MS Word:
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-Blaise

 -- Mr. Blaise Doughan

The document revision named Proposal - Containment and Enterprise Data
Models (SDO-EnterpriseDataModel.doc) has been submitted by Mr. Blaise
Doughan to the OASIS Service Data Objects (SDO) TC document repository. 
This document is revision #1 of SDO-EnterpriseDataModel.doc.

Document Description:
The SDO spec to date has primarily concerned itself with deriving SDO
metadata from XML schema.  As such containment has come to represent the
concept of nesting as it relates to XML elements.  We prefer to think of
containment as it relates to data sharing between types.

For the association "residence" between types "Employee" and "Address" if
instances of "Employee" may not share references to instances of "Address"
then it is a containment relationship:  
 
Containment:  employeeDO1.get("residence") == employeeDO2.get("residence");
 // This can never be true
Non-Containment:  employeeDO1.get("residence") ==
employeeDO2.get("residence");  // This can be true
 
Using the above interpretation of containment it becomes easy to derive SDO
metadata from other sources, such as JPA entities, JAXB objects, relational
databases, etc. (the doc provides examples of deriving SDO metadata from a
relational database & JPA entities).  These sources may not have a concept
of nesting, but they are aware of data sharing rules.  Of course
DataObjects require an XML representation, and containment has been an
important part of that.  The attached proposal contains an algorithm that
makes use of containment properties when they are present and handles
things when they are not.

View Document Details:
http://www.oasis-open.org/apps/org/workgroup/sdo/document.php?document_id=27869

Download Document:  
http://www.oasis-open.org/apps/org/workgroup/sdo/download.php/27869/SDO-EnterpriseDataModel.doc

Revision:
This document is revision #1 of SDO-EnterpriseDataModel.doc.  The document
details page referenced above will show the complete revision history.


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