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    <title>MongoDB Jira</title>
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    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-12100] What are the common document structures used by MongoDB for analytical models</title>
                <link>https://jira.mongodb.org/browse/SERVER-12100</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We are looking at 3 common possibilities for modeling star joins in a single collection to mimic OLAP / data mart models for analytics in MongoDB:&lt;/p&gt;

&lt;p&gt;1.  Fact grain embedded in the array&lt;br/&gt;
{&lt;br/&gt;
&quot;patient_id&quot;  :  123,&lt;br/&gt;
&quot;demog&quot; : &lt;/p&gt;
{ &quot;birth_dt&quot;  : ISODate(&#8220;1977-05-12&#8221;), &quot;gender&quot;  : &quot;F&quot;, &quot;state&quot; : &quot;MI&quot; }
&lt;p&gt;,&lt;br/&gt;
&quot;PCP&quot;  :  &quot;Dr. John Smith&quot;,&lt;br/&gt;
&quot;claim_history&quot; :  [&lt;br/&gt;
    &lt;/p&gt;
{ &quot;claim_id&quot;  :  1456, &quot;claim_dt&quot; : ISODate(&#8220;2009-11-19&#8221;), &quot;Prim_Dx&quot; : &quot;323.9&quot;, &quot;DRG&quot;  : 127,
      &quot;net_pay_amt&quot; :  432.12,&quot;LOS&quot; : 1 }
&lt;p&gt;,&lt;br/&gt;
    &lt;/p&gt;
{ &quot;claim_id&quot;  :  2456, &quot;claim_dt&quot; : ISODate(&#8220;2009-12-01&#8221;), &quot;Prim_Dx&quot; : &quot;326.1&quot;, &quot;DRG&quot;  : 253, 
       &quot;net_pay_amt&quot; :  112.52, &quot;LOS&quot; : 4}
&lt;p&gt;,&lt;/p&gt;
   { &quot;claim_id&quot;  :  4456, &quot;claim_dt&quot; : ISODate(&#8220;2010-01-06&#8221;), &quot;Primary_Dx&quot; : &quot;323.9&quot;, &quot;DRG&quot;  : 322, 
      &quot;net_pay_amt&quot; : 552.75, &quot;LOS&quot; : 1 }
&lt;p&gt;]&lt;br/&gt;
}&lt;/p&gt;

&lt;p&gt;2.  Simple Array of Values  (creates a M:M mapping OLAP problem)&lt;br/&gt;
{&lt;br/&gt;
  _id : &#8220;joe&#8221;,&lt;br/&gt;
  age : 23,&lt;br/&gt;
  gpa:  3.23,&lt;br/&gt;
  classes : [  &#8220;BUS252&#8221;, &#8220;MUS101&#8221;, &#8220;CS220&#8221; ]&lt;br/&gt;
}&lt;/p&gt;

&lt;p&gt;3.  Array contains a collection of references to other documents.  How often do you feel that we&#8217;ll see references like this?&lt;/p&gt;

&lt;p&gt;{&lt;br/&gt;
_id : &#8220;B7XF873&#8221;&lt;br/&gt;
&quot;username&quot;  :  &#8220;joeUser&#8221;,&lt;br/&gt;
&quot;Full Name&quot;  :  &#8220;Joe User&#8221;,&lt;br/&gt;
&quot;Age&quot;  : 25,&lt;br/&gt;
&#8220;Occupation&#8221; : &#8220;Baker&#8221;&lt;br/&gt;
&#8230;&lt;br/&gt;
&#8220;Following&#8221; : [  &#8220;LLXF321&#8221;, &#8220;ADE3F44&#8221;, ... ]&lt;br/&gt;
}&lt;/p&gt;


&lt;p&gt;Are these the most common models that you see or is there a recommendation from Mongo in building analytic models in Mongo?&lt;/p&gt;</description>
                <environment></environment>
        <key id="102226">SERVER-12100</key>
            <summary>What are the common document structures used by MongoDB for analytical models</summary>
                <type id="6" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Question</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="9">Done</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="kromerm">Mark Kromer</reporter>
                        <labels>
                    </labels>
                <created>Sun, 15 Dec 2013 18:46:45 +0000</created>
                <updated>Thu, 9 Jan 2014 20:03:05 +0000</updated>
                            <resolved>Thu, 9 Jan 2014 20:03:04 +0000</resolved>
                                    <version>2.5.4</version>
                                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="479756" author="scotthernandez" created="Thu, 9 Jan 2014 20:03:05 +0000"  >&lt;p&gt;Mark, these types of questions are best asked on the mongodb-user groups (&lt;a href=&quot;https://groups.google.com/group/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://groups.google.com/group/mongodb-user&lt;/a&gt;) where the community can be involved, and it is possible that it has already been discussed. Primary this SERVER jira project is meant for filing bugs, enhancement requests and deal with code contributions (pull requests).&lt;/p&gt;

&lt;p&gt;This sounds a bit like a guidance/consulting question and if you have a contact at mongodb, you might want to contact them directly to setup time/a-call to discuss these types of broad questions.&lt;/p&gt;</comment>
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