title: How to get a persisting local datomic database?
body: <p>With Datomic, I am confused as to how to get a local database to play around with </p>
  
  <p>If I type:</p>
  
  <pre><code>&gt;&gt;(ns datomic-tut (:use [datomic.api :as d]))
  nil
  
  &gt;&gt;(d/create-database "datomic:mem://hello")
  true
  
  &gt;&gt; (d/connect "datomic:mem://hello")
  #&lt;LocalConnection datomic.peer.LocalConnection@57102fab&gt;
  
  &gt;&gt; Ctrl-D to Disconnect
  </code></pre>
  
  <p>Then, if I restart the repl:</p>
  
  <pre><code>&gt;&gt; (ns project-ns   (:use [datomic.api :as d]))
  nil
  
  &gt;&gt; (d/connect "datomic:mem://hello")
  ExceptionInfo :peer/db-not-found Could not find hello in catalog  clojure.core/ex-info (core.clj:4227)
  </code></pre>
  
  <p>Is there another type of local uri I can create that saves the database that I create?</p>