title: Entity Framework 5 Code Migration doesn't create database
body: <p>I'm trying to use Entity Framework 5 Code First.
  I've created model classes and context.</p>
  
  <p>After that following Microsoft instructions I've enabled code migrations.</p>
  
  <p>Than I skipped running my application (during which DB should be created first time) and use Add-Migration command. Migration was generated successfully. </p>
  
  <p>Update-Database call was also successfull. <strong>But I'm not seeing my DB at all.</strong> It is absent! </p>
  
  <p>SQL Management Studio and Visual Studio Server Explorer show only 4 default system databases and that's all!
  I also tried to launch my application - it doesn't change anything.
  I'm using </p>
  
  <pre><code>public MyContext() : base("name=MyContext") { }
  </code></pre>
  
  <p>such type of constructor (so I need specify connection string with <strong>MyContext</strong> name.
  Here is my <strong>app.config</strong> example:</p>
  
  <pre><code>&lt;configuration&gt;
      &lt;configSections&gt;
        &lt;!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --&gt;
        &lt;section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" /&gt;
      &lt;/configSections&gt;
      &lt;entityFramework&gt;
        &lt;defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework"&gt;
          &lt;parameters&gt;
            &lt;parameter value="v11.0" /&gt;
          &lt;/parameters&gt;
        &lt;/defaultConnectionFactory&gt;
      &lt;/entityFramework&gt;
      &lt;startup&gt; 
          &lt;supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" /&gt;
      &lt;/startup&gt;
      &lt;connectionStrings&gt;
        &lt;add name="BettyContext" providerName="System.Data.SqlServerCe.4.0" connectionString="Data Source=MyDB.sdf"/&gt;
      &lt;/connectionStrings&gt;
  &lt;/configuration&gt;
  </code></pre>
  
  <p>I have no idea what's going on. Seems that no one has such problem. May be I've missed some evident thing, but howbeit I'm waiting for some help.</p>