You might have seen the recent news reports about the collision between U.S. and Russian communication satellites. The U.S. satellite was one of the Iridium satellites. What wasn’t reported and you probably don’t know is that an object database management system (ODBMS) is an important part of the Iridium system. Even though ODBMSs are a [...]
February 13, 2009
I am now also posting on the Cutter Blog. My initial posting is (The Acronym) SOA is (Perhaps) Dead (at Some Companies); Long Live Services. It is a response to Anne Thomas Manes’ SOA is Dead; Long Live Services on her blog at the Burton Group.
January 9, 2009
The typical definition of an atomic task or process is one that cannot be decomposed further. This is vague and subject to interpretation. The Decomposition Matrix on this site uses a specific definition: A task (for business process diagrams) or a process (for data flow diagrams) is atomic if every input relates to every output [...]
December 3, 2008
My last posting referenced the criteria for a well-formed business process diagram mentioned in Business Process Driven SOA using BPMN and BPEL by Matjaz B. Juric and Kapil Pant. I am going to expand on their criteria to create a more comprehensive definition of a well-formed business process diagram.
To start, here are three criteria from [...]
November 18, 2008
I recently received two new books on business process modeling. Both books looked interesting because they had great titles. As it turns out, one book is great and the other not so good.
The not so good book is Business Process Driven SOA using BPMN and BPEL by Matjaz B. Juric and Kapil Pant. There are [...]
October 9, 2008
The Design Decomposition Blog is written by Doug Barry.
I believe we'd be better served by a change in the vertical axis of the
DBMS Matrix. Handling queries is not a valid way to classify DBMSs. Many DBMSs
handle queries, including relational, object, and object-relational. Navigation
performance is a way to classify DBMSs. If we draw a new matrix taking
navigation into consideration, a clearer, more accurate picture results, as
shown in the following figure. By the way, it is assumed that all DBMSs in this
matrix handle queries. Nevertheless, I have noted this in the left axis just so
there is not mistaking this fact.
This matrix indicates that if you have a business need for high performance
on complex data, you should be looking at ODBMSs. It is terribly wrong to discount
ODBMSs based on the erroneous idea that they do not handle queries. It is more
accurate to see that they handle queries and provide high performance navigation
for complex data -- often, that navigation involves queries.
There are nearly 400 pages of articles on this site with over 50 pages on object-oriented database management systems.
Search this site for more articles
Custom Search
Browse this site for more articles
Click on the topics below to browse the articles on this site. You can see more detail by clicking on the arrows. This highlights the location of the current
article: A better DBMS Matrix.
Databases at dawn TechCentral Object-relational tools like Hibernate can make it easier to support multiple database vendors by hiding the underlying database. ... 19 Jul 2010 at 2:17am
MODX Revolution 2.0 has been released CMS Critic It is built on a modern, object-oriented core with a fully documented API for developers, sits on top of a robust database Object-Relational Mapping (ORM) ... and more » 26 Jul 2010 at 7:54am
SQL, NoSQL or SomeSQL? Dr. Dobb's (blog) The NoSQL DBMS typically differs from an object-relational DBMS, for example, in several areas. The cost of licensing is a major difference but the focus ... 22 Jul 2010 at 5:31pm