P: Fact Based Modelling and the European Space Agency

Ken Evans — Sat, 05 Dec 2009 12:23:05 GMT

This presentation shows the role of fact based modelling in supporting the development of space systems at the European Space Agency.(ESA)

ESA has a complex data environment that involves a large number of partners. Some say that the ESA data management problem is a superset of most of the data management problems that exist in smaller organisations. ESA data is distributed around the world in different time zones across government agencies, industrial companies and research centers. Many ESA projects span decades and each phase of a space system project may involve many different partners.

Thus, ESA's challenge is to ensure that data is available in a consistent manner to all the partners that are involved over the full space system life cycle.
ESA aims to use fact based modeling to produce database applications by:

* providing methods and tools for data modeling
* tailoring their software engineering standard for the purpose of developing database systems.
* supporting the exchange of database products

This presentaion was prepared by Serge Valera (ESA), Inge Lemmens (PNA Group) and Francesco Sgaramella(Space Software Italia)

P: A Simplified Common ORM Metamodel- Discussion Draft

Ken Evans — Wed, 11 Nov 2009 10:58:44 GMT

NOTE: File updated on 26 July 2010. The corrupted pdf file has been replaced with a pps file.

Serge Valera (European Space Agency) with Terry Halpin(NORMA), Matt Curland(NORMA) & Inge Lemmens(PNA).

This draft is for communication purposes, to clarify ORM semantics, and covers only a basic core of the metamodel

(ignores units, structured data types, structured derivation rules etc.).

A more complete metamodel designed to optimize model exchange is to be completed later.

This metamodel assumes syntactical completeness (e.g. some mandatory constraints may be violated when in the process of building a model)

Although UUIDs are used for key elements to facilitate model merging, versioning, and reuse, the metamodel assumes each model instance

owns all its elements. The metamodel can easily be extended to cater for reuse of components from external models.

The delegates at the workshop agreed to set up a group of experts to produce such an exchange schema.

ORM 2009 : ESA

P: Fact Based Modelling and the European Space Agency

P: A Simplified Common ORM Metamodel- Discussion Draft