Web Application Development. Define ER model in QSEE Generate SQL Create Database mySQL Write Script...
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Transcript of Web Application Development. Define ER model in QSEE Generate SQL Create Database mySQL Write Script...
Web Application Development
Define ER model in QSEE
Generate SQL
Create DatabasemySQL
Write Script to use TableEditor
class
Process to create
A simple SQL table
Using PHPMyADMIN Or MySQL command
line
QSEE
• Multi-case diagramming tool– All UML diagrams– ++
• Entity-Relationship Diagrams– Generates SQL for various targets (including MySQL 4.0)– Implements relationships automatically
• 1- many : adds primary key on 1-side as columns in the many side to make foreign keys
• Many-many : adds an new link table with the primary keys from both sides as foreign keys (and a joint primary key)
• Dependent (weak) entities : foreign key becomes part of the primary key
– Sets up the appropriate integrity constraints• Action on delete and update for foreign keys
PHPMyAdmin
• GUI interface to MySQL server (shares)• GUI runs on stocks (the PHP server)• Full access to a database for
– Creating tables– Added data– Browsing the data– Import and Export of tables…– Execute SQL queries (DML) or definitions (DML)
• But ..
Command line MySQL
• Generated SQL comments are rejected by PHPMyAdmin
• login to shares directly using putty
• change directory to your project directory
• Enter:mysql –p
use database
source proj.sql
Editing a Table
• Table editor has to support the functions of:– Browsing the table– Inserting a new row (with validation and
defaults)– Deleting a row– Editing a row– Copying (or cloning) an existing row
Common Pattern
• Could write the script each time by hand• Could write a single ‘data-driven’ class
– Class must be able to read the table definition from the database (DESCRIBE command)
– Class must allow user to control the options offered
• Some open-source code exists– Here is one by Richard Heyes– http://www.phpguru.org/static/TableEditor.html
Main script for editor<?php
require_once('db.php');require_once('TableEditor.php');
$editor = new TableEditor($dblink, 'Member');$editor->setConfig('allowPKEditing', true); $editor->setConfig('allowASearch', false);
$editor->setConfig('perPage', 5);$editor->setConfig('title', 'Edit Members');$editor->setRequiredFields('memberid', 'name');
$editor->display();
?>