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-<com:TContent ID="body">
-<h1>Database Design</h1>
-<p>The design steps we take in the sample application is a data centric
-approach. That is, we shall consider the application from the view
-point of data structures, data relationships and data integrity.
-Other designs starting from object and class design are also possible but is
-not the approach taken in this guide.
-</p>
-
-<h2>Entity Relationship</h2>
-<p>We start with the following entity relationship diagram. 
-The bold text in each entity indicate required fields. The underline
-text indicates the entity's primary key, also denoted as <tt>PK</tt>.
-Entity relationships are indicated with arrows between entities and
-each relationship field is denoted with <tt>FK</tt>.</p>  
-
-<p>The four entities: <tt>Project</tt>, <tt>Categories</tt>, <tt>TimeEntry</tt> 
-and <tt>ProjectMembers</tt>
-makes up the time tracker application. While the other entities:
-<tt>Users</tt>, <tt>UserRoles</tt>, <tt>RoleTypes</tt> and <tt>Signon</tt> are
-usually found in applications where membership or user management is required.</p> 
-
-<img src=<%~ db.png %> class="figure" />
-</p>
-
-<div class="info"><b>Info:</b>
-See <a href="http://en.wikipedia.org/wiki/Database_normalization">Database Normalization</a>
-for a quick reference regarding database design and normalization, especially the
-3rd normal form (3NF).
-</div>
-
-<h2>MySQL database</h2>
-<p>We shall concentrate on the MySQL database for this sample application.
-Other database engines are also possible and can be quite easily inter-changed.
-The SQL script to initialize the MySQL database is given below. The following
-SQL script was created using MySQL version 4.1.7. 
-</p>
-
-<com:TTextHighlighter Language="sql" CssClass="source">
-<%= file_get_contents('protected/data/time-tracker-mysql.sql') %>
-</com:TTextHighlighter>
-</com:TContent>
-\ No newline at end of file