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POforeign-key on a table not in the database, with ORM
 

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    <p>I have a static table <code>entry</code> that's shared by several databases/website. By static, I mean the data is read but never updated by the websites. Currently, all websites are served from the same server but that may change.</p> <p>I want to minimize the need for creating/maintaining this table for each of the websites, so I thought about turning it to a variable that's stored in a shared library that all websites have access to. </p> <p><strong>The problem is I use an ORM and use foreign key constraints to ensure referential integrity of the ids used from that static table,</strong> so by removing that table out of the MySQL database into a variable, how can I still get referential integrity for the ids referenced from that table? Do I have to do it entirely programmatically or is there a trick to still treat the data as if coming from a real db table. </p> <p>My database definition (using Propel) originally looked like this, where the <code>refer</code> table had a field <code>linkto</code> that was referencing the <code>id</code> of the <code>entry</code> table. Now that the <code>entry</code> table is in code, I can't do the foreign-key trick any more, or can I somehow get the same effect?</p> <pre><code> &lt;table name="entry"&gt; &lt;column name="id" type="INTEGER" primaryKey="true" autoIncrement="true" /&gt; &lt;column name="title" type="VARCHAR" size="500" required="true" /&gt; &lt;/table&gt; &lt;table name="refer"&gt; &lt;column name="id" type="INTEGER" primaryKey="true" autoIncrement="true" /&gt; &lt;column name="linkto" type="INTEGER"/&gt; &lt;foreign-key foreignTable="entry"&gt; &lt;reference local="linkto" foreign="id" /&gt; &lt;/foreign-key&gt; &lt;/table&gt; </code></pre> <p><strong>And of course are these any other efficient ways to do the same thing? I just don't want to have to repeat that table for several websites.</strong></p>
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