diff --git a/library/Icinga/Data/Queryable.php b/library/Icinga/Data/Queryable.php
new file mode 100644
index 000000000..278bb04b2
--- /dev/null
+++ b/library/Icinga/Data/Queryable.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace Icinga\Data;
+
+/**
+ * Interface for specifying data sources
+ */
+interface Queryable
+{
+    /**
+     * Set the target and fields to query
+     *
+     * @param   string  $target
+     * @param   array   $fields
+     *
+     * @return  Fetchable
+     */
+    public function from($target, array $fields = null);
+}