Using SPMetal

<?xml version="1.0" encoding="utf-8"?>
<Feature xmlns="http://schemas.microsoft.com/sharepoint/" Title="SPMetal Feature1" Id="c5060513-0642-4c62-abb0-9771cb53893f" Scope="Web">
  <ElementManifests>
    <ElementManifest Location="Fields\Elements.xml" />
    <ElementManifest Location="Contact\Elements.xml" />
    <ElementManifest Location="Company\Elements.xml" />
    <ElementManifest Location="CompaniesList\Elements.xml" />
    <ElementManifest Location="Companies\Elements.xml" />
    <ElementFile Location="Companies\Schema.xml" />
    <ElementManifest Location="ContactsList\Elements.xml" />
    <ElementManifest Location="Contacts\Elements.xml" />
    <ElementFile Location="Contacts\Schema.xml" />
  </ElementManifests>
</Feature>