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.
There are three JDO identity models to allow for different underlying database
management systems (DBMSs). The type of JDO identity used is a property of a JDO PersistenceCapable class.
The JDO identity models are:
Application (primary key) identity. This is the JDO identity type used for data stores in which the
value(s) in the instance
determine the identity of the object in the data store. (This is commonly
used in relational DBMSs)
Data store identity. This is the JDO identity type used for data stores in which the identity of the data in the
data store does not depend on the values in the instance. The implementation guarantees
uniqueness for all instances. (This is commonly used in object DBMSs.)
Non-data store JDO identity. The primary usage for non-data store JDO identity is for log files, history files, and other
similar files, where performance is a primary concern.
A JDO implementation is required to support either application (primary key) identity or
datastore identity, and may optionally support non-datastore identity.
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