Practice: How to draw workflow and dataflow?

I studied how to draw workflow and dataflow on last thursday(12-4-2008).I was drew workflow and my dataflow with my partner. And I show it's to my teacher for determine what is mistake in my work.

A workflow is a diagram that show sequence of operation ,declared as a work of a group of person,work of an organization of staff, or machines.

Example of Workflow

A dataflow is a diagram representation of the "flow" of data through an information system. it shows the data flow of the program.
Example of Dataflow


In that class, case study for workflow and dataflow workshop was Student registeration system of My university.It is familiar with students.

students are devided into 3person per a group,3 person are difference major.the problem for workshop is based on experience of people in a group.

First,we drew workflow.We were brainstrom for determined what is processes in each steps those students have to do when they register for each semester and wrote them down in workflow format. Second,we drew dataflow.We were looked workflow for determined what those data in each processes and wrote them down in dataflow format.

Our workshop had been found mistakes when teacher checked for this reason I had to corrected it in many times until it it was correctly.

Teacher was assigned students to drawing their workflow and dataflow in their computer -- use visio, etc. And print it out to paper for submit in teacher office.And teacher assigned student to determine dataflow for their miniproject.