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 [...]
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 [...]
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.
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