Silverlight and OWL2

Version 4.4 of PyrrhoDBMS is released today, with support for OWL 2 subtypes and Silverlight applications.
I am particularly excited by the Silverlight version. This is a dll that is included in your Silverlight project, and via inclusion in the .xap file, runs on the client machine, using secure local storage in the client machine for the database(s) used by your application. I really feel this brings a whole new perspective on persistence, since the application can organise the data flexibly using SQL. Full SQL is available (apart from the xmlquery primitive) in a compact engine (600KB !).
Okay, I've removed a few previous technologies in this edition. Many people thought I was mad to include SPARQL in a DBMS, and this has now been removed, as have the built-in HTTP services, and the datamodel machinery.
I will publish some samples for both of the above innovations on the PyrrhoDB web site in the next few days. So much has changed that there are bound to be some bugs. For the moment the download pages also provide previous versions of the PyrrhoDBMS. Please let me know if anything strange happens for you.
UPDATE 2 March: The 1 March versions had a serious bug affecting Alter table add, with database corruption. The 2 March versions fix this problem.

Library update

Today's updates are to the PyrrhoLink and OSPLink libraries, to fix a bug in code from 17 Sept.

Adding a Mono version

Today's update includes some version compiled for Linux.

Transaction Profiling

Today's update fixes some mathematical functions that the parser didn't recognise, and makes some improvements to threading.
There is also some new support for transaction profiling, to be discussed in a paper I am writing.

Fix to ordering

Today's update fixes a problem with rowset ordering.
Keep me posted on any performance issues.

SQL2008 Compliance

Belatedly perhaps, the version released today has been updated to address SQL2008 compliance. The main change is the new FETCH FIRST n ROWS ONLY clause that can be added in any top-level query expression (usually in combination with an ORDER BY clause).
Please advise me of any performance issues.

Groups and Window Functions

Today's fix is for the advanced window functions.
Email me if you find anything that does not work.