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    <div class="moz-cite-prefix">On 06/05/2014 05:25 PM, Tahmina Ahmed
      wrote:<br>
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          <div dir="ltr">Dear all,
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            <div>I am trying to use neo4j graph database instead of
              mysql for  my keystone would you please help with any
              documentation or ideas how I need to write the driver.</div>
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    No clue about Graph Databases myself.  You should pick one backend,
    though, and implement for that.  I would suggest leaving mysql for
    all but policy, and implement a driver for that.  it is by far the
    simplest subsystem.<br>
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    it would be in keystone/policy/backends/<br>
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            <div>Thanks & Reagrds,</div>
            <div>Tahmina</div>
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