I've just attached a demo into
http://issues.apache.org/jira/browse/TUSCANY-751
Please review by unzip
http://issues.apache.org/jira/secure/attachment/12341763/NewSdoOverview.zip
and use a browser to open sdo_index.html;
the overview diagram can be clicked into respective introduction.
Looking forward to your inputs and I'll incorporate them.
Thanks.
On 9/22/06, Yang ZHONG <[EMAIL PROTECTED]> wrote:
Thank Andrew for the support
and thank Kelvin and Geoff for the text contribution.
I propose this brief description right after "SDO is a natural format
...":
"SDO provides flexible data structures that allow data to be organized
as graphs of objects (called data objects) that are composed of
properties. Properties can be single or many valued and can have other
data objects as their values. A data object can maintain a change
summary of the alterations made to it, providing efficient
communication of changes and a convenient way to update an original
data source. SDO naturally permits disconnected data access patterns
with an optimistic concurrency control model. Change summaries are great
for doing roll-back too."
"SDO offers a convenient way to work with XML documents. SDO
implementations provide helpers to populate a data graph from both XML
documents and relational databases and also to read SDO metadata from
an XML Schema Definition (XSD). Data objects can be serialized to XML
and the metadata can be serialized to an XSD file."
And I propose this structural diagram clickable towards brief DataObject,
Type, Property and ChangeSummary description:
http://issues.apache.org/jira/secure/attachment/12341428/overview.gif
As for DataObject brief description page, I propose
"Data objects are composed of
properties. Properties can be single or many valued and can have other
data objects as their values. A data object can maintain a change
summary of the alterations made to it."
with this diagram:
http://issues.apache.org/jira/secure/attachment/12341426/DataObject.gif
As for Type brief description page, I propose
"Type is the model of DataObject. Type is composed of Properties,
also Type inherits Properties from base Types."
with this diagram:
http://issues.apache.org/jira/secure/attachment/12341429/type.gif
As for ChangeSummary brief description page, I propose
"ChangeSummary provides efficient
communication of changes and a convenient way to update an original
data source. SDO naturally permits disconnected data access patterns
with an optimistic concurrency control model. Change summaries are great
for doning roll-back too."
with this diagram:
http://issues.apache.org/jira/secure/attachment/12341430/ChangeSummary.gif
As for Property brief description page, I propose
"A Property can be single or many valued, and value has a Type.
A Property can specify a default value."
with this diagram:
http://issues.apache.org/jira/secure/attachment/12341425/property.gif
On second thought, maybe the linked description pages doesn't have to be
brief.
What do you think and what do you propose if we can put more description
there please?
Looking forward to your inputs and I'll incorporate them.
Thanks.
--
Yang ZHONG
--
Yang ZHONG
