I was planned for develop my database.I was planned about data,table, and drawing dataflow
diagram for determine what datum are flow in database system.I went to met teacher almost every month for present database diagram ,then I learned "How to draw diagram correctly".
database diagrams is involved context diagram,dataflow diagram,E-R diagram.It useful for
operate,develop,implement,my database well.
In last week,I deployed table on MySQL database,I used phpMyAdmin tools. Database is
consits 3 table are MOE_GIRL,CREATOR,MOE_TYPE,these tables are related.I added data
by GUI but I create relation between table by COMMAND LINE. I copied database command
[such as Createtable,CREATEDATABASE]to text file for study it later.
In the future,I will normalize and develop database application for get database more usable
and learning further.
Tuesday, December 30, 2008
Thursday, December 18, 2008
Drawing dataflow diagram
The process that operate our data in our database usually transfer data between processes. We can determine which data flowing in processes by Using dataflow diagram.
When we need to create database operation application such as Web application,Shop inventory system etc, we need to know what data those store in our database. The application will have to running processes to show and response us, each process have to transfer data between them. To determine which data flowing in each processes we have to drawing some diagram in our paper.
Dataflow diagram is very helpful to determine which data will flow in each process.It doesn't like flowchart beacause It certainty mentioned about data,we don't have to write a lot of conditions.It is one of necessary diagram to planing systems those will running on website,inventory,HR etc.It is guide to us which data will using in each process,which data will transfered between processes.
We can draw dataflow in following forms:
1.Yourdon + Demarco.
2.Gane and Sarson.
3.SSDAM
4.Unified
Concept of drawing :::the application or process is like closed box please open them.
In following step to determine data.
1. draw context diagram -- to determine which data will operated between user and application
2.draw Level 0....n dataflow diagram -- to uncover application and determine data in each processes,we can separate in small module to get easily understand.
***********************************************************************************
When we need to create database operation application such as Web application,Shop inventory system etc, we need to know what data those store in our database. The application will have to running processes to show and response us, each process have to transfer data between them. To determine which data flowing in each processes we have to drawing some diagram in our paper.
Dataflow diagram is very helpful to determine which data will flow in each process.It doesn't like flowchart beacause It certainty mentioned about data,we don't have to write a lot of conditions.It is one of necessary diagram to planing systems those will running on website,inventory,HR etc.It is guide to us which data will using in each process,which data will transfered between processes.
We can draw dataflow in following forms:
1.Yourdon + Demarco.
2.Gane and Sarson.
3.SSDAM
4.Unified
Concept of drawing :::the application or process is like closed box please open them.
In following step to determine data.
1. draw context diagram -- to determine which data will operated between user and application
2.draw Level 0....n dataflow diagram -- to uncover application and determine data in each processes,we can separate in small module to get easily understand.
***********************************************************************************
Sunday, December 7, 2008
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.
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.
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