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<a name="Database-connection"></a>
<div class="header">
<p>
Next: <a href="Working-with-data.html#Working-with-data" accesskey="n" rel="next">Working with data</a>, Previous: <a href="Database-creation.html#Database-creation" accesskey="p" rel="prev">Database creation</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html#Index" title="Index" rel="index">Index</a>]</p>
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<hr>
<a name="Database-connection-1"></a>
<h2 class="chapter">27 Database connection</h2>

<p>An example which connects to and then disconnects from the database.
provided you have already created the database in previous section
</p>
<div class="example">
<pre class="verbatim">#include &lt;Foundation/Foundation.h&gt;
#include &lt;EOAccess/EOAccess.h&gt;
#include &lt;EOControl/EOControl.h&gt;

int
main(int arcg, char *argv[], char **envp)
{
  NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
  EOModelGroup *modelGroup = [EOModelGroup defaultGroup];
  EOModel *model = [modelGroup modelNamed:@&quot;library&quot;];
  EOAdaptor *adaptor;
  EOAdaptorContext *context;
  EOAdaptorChannel *channel;

  /* Tools don't have resources so we have to add the model manually. */ 
  if (!model)
    {
      NSString *path = @&quot;./library.eomodel&quot;;
      model = [[EOModel alloc] initWithContentsOfFile: path];
      [modelGroup addModel:model];
      [model release];
    }
 
  adaptor = [EOAdaptor adaptorWithName:[model adaptorName]];
  context = [adaptor createAdaptorContext];
  channel = [context createAdaptorChannel];

  [channel openChannel];

  /* insert code here */

  [channel closeChannel];
  [pool release];
  return 0;
}

</pre></div>




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