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.
The following figure shows the relational schema for this example. Employee
in this example includes teachers and support personnel. Teachers include
instructors, professors, and graduate students in a workstudy program. In this
example, one set of type codes is used for all these types of employees.
There are two intersection entities in this schema: Student/Course and
Employee/Course. These handle the two many-to-many relationships: 1) between
Student and Course, and 2) between Employee and Course. In the first case, a
Student may take many Courses and a Course may be taken by many Students.
Similarly, in the second case, an Employee (one of the types of Teachers) may teach many Courses and a Course
may be taught by many Teachers. Also see more
on many-to-many relationships (new window).
Next:Employee
Table. Also see the related content below.
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based on 11 reviews.
based on 4 reviews.
