------------------------------------------------------------ revno: 1036 committer: Lars Helge Øverland <larshe...@gmail.com> branch nick: dhis2-docbook-docs timestamp: Tue 2014-04-22 16:32:57 +0200 message: Removed outdated file removed: src/docbkx/en/datamodel.xml
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=== removed file 'src/docbkx/en/datamodel.xml' --- src/docbkx/en/datamodel.xml 2009-11-17 15:38:25 +0000 +++ src/docbkx/en/datamodel.xml 1970-01-01 00:00:00 +0000 @@ -1,111 +0,0 @@ -<?xml version="1.0" encoding="UTF-8"?> -<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" - "http://www.docbook.org/xml/4.4/docbookx.dtd";> -<article> - <title>Data Model Revision</title> - <subtitle>A fresh look at dimensions</subtitle> - <sect1> - <title>Background</title> - <para> The question of multi-dimensional data in DHIS2 has been recently thrown back into - relief by a number of emerging use cases. The discussion which was started on the - mailing list by Jason Pickering turned into a very long thread which you can read the - archive <ulink url="https://lists.launchpad.net/dhis2-devs/msg02138.html";>here</ulink>. </para> - <para> What emerged in this discussion is that the current implementation of dimensional - <code>dataelements</code> through <code>categorycombo/category/categoryoption</code> - serves a useful purpose for data input but there are areas where it can be optimized and - made more accessible for analysis and reporting. Similarly the existing model of - <code>dataelementgroups</code> and <code>indicatorgroups</code>was identified as - requiring expanding in order to provide flexible mult-dimensionality in analysis and - reporting. </para> - <para> The proposed resolution to these issues tries to take into account existing best - practice from within DHIS as well as other communities such as the <ulink - url="http://groups.google.com/group/sdmx_hd";>SDMX HD</ulink> group within WHO. There - has also been a conscious effort to add functionality through simplifying and - harmonising wherever possible, rather than by adding complexity. </para> - <para>The draft proposal here is authored by myself and Lars, but is really a synthesis of a - great number of inputs from the likes of Jason, Abyot, Ola, Knut and Johan. It is a - living document and will be updated as the implementation details settle. </para> - </sect1> - <sect1> - <title>The status quo</title> - <para>Text</para> - </sect1> - <sect1> - <title>Proposed Resolution</title> - <sect2> - <title>Guiding Principles</title> - <para> - <itemizedlist> - <listitem> - <para><emphasis role="bold">DataElements</emphasis> can be assigned to zero - or more <emphasis role="bold">Groups</emphasis></para> - </listitem> - <listitem> - <para><emphasis role="bold">Indicators</emphasis> can be assigned to zero or - more <emphasis role="bold">Groups</emphasis></para> - </listitem> - <listitem> - <para><emphasis role="bold">Groups</emphasis> can be assigned to <emphasis - role="bold">Groupset</emphasis></para> - </listitem> - <listitem> - <para><emphasis role="bold">Dimensions</emphasis> are attributes of a - measure (<emphasis role="bold">datavalue</emphasis> or <emphasis - role="bold">indicator value</emphasis>) rather than of a <emphasis - role="bold">dataelement</emphasis> or <emphasis role="bold" - >indicator</emphasis></para> - </listitem> - <listitem> - <para>All <emphasis role="bold">Datavalues</emphasis> have at least three - compulsory <emphasis role="bold">Dimensions</emphasis> - orgunit, period - and dataelement. They may have additional <emphasis role="bold" - >dimensions</emphasis>.</para> - </listitem> - <listitem> - <para><emphasis role="bold">DataValues</emphasis> should have a method - <emphasis role="italic">getDimensions()</emphasis> which returns a a - map of its <emphasis role="bold">dimensions</emphasis> and <emphasis - role="bold">dimension values</emphasis>, including source, period - and datelement.</para> - </listitem> - <listitem> - <para>A set of <emphasis role="bold">Groupsets</emphasis> may be assigned to - a new <emphasis role="bold">Indicator</emphasis> or <emphasis - role="bold">Dataelement</emphasis>. Values with this <emphasis - role="bold">dataelement</emphasis> or <emphasis role="bold" - >indicator dimension</emphasis> will have additional <emphasis - role="bold">dimensions</emphasis>; one <emphasis role="bold" - >dimension</emphasis> for each <emphasis role="bold" - >groupset</emphasis> with a <emphasis role="bold" - >dimension</emphasis> value equal to the corresponding group name. - </para> - </listitem> - <listitem> - <para>A <emphasis role="bold">DataValue</emphasis> may have additional - dimensions by virtue of its <emphasis role="bold" - >CategoryComboOption</emphasis>. In this case a call to <emphasis - role="italic">getDimensions</emphasis>() will return these - additional dimensions, one <emphasis role="bold">dimension</emphasis> - for each <emphasis role="bold">category</emphasis> with dimension value - equal to the corresponding <emphasis role="bold" - >categoryOption</emphasis>.</para> - </listitem> - <listitem> - <para>The available GroupSet names shall be coincident with the available - Category names and codes. There will be one table in the database for - these..</para> - </listitem> - <listitem> - <para>The available Group names shall be coincident with the available - CategoryOptions. There will be one table in the database for - these..</para> - </listitem> - <listitem> - <para>CategoryOptions shall be grouped by Category. It is however possible - that a CategoryOption may appear in more than one Category</para> - </listitem> - </itemizedlist> - </para> - </sect2> - </sect1> -</article>
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