#145: transform (ETL) GPC i2b2 data to PCORNet CDM
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Reporter: dconnolly | Owner: ngraham
Type: enhancement | Status: assigned
Priority: major | Milestone: drn-basic-query
Component: data-sharing | Resolution:
Keywords: | Blocked By: 109, 146, 225
Blocking: 160 |
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Comment (by jdale):
Per Dan's request during 3.3.15 GPC Dev call regarding GPC->CDM experience
report
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At Minnesota, instead of creating and populating database tables to match
the PCORI CDM, we chose to develop PCORI CDM specific views on top of our
existing production data warehouse model.
We chose this option for two reasons:
1. Database storage – We currently have data for 2.2 million patients
which equates to approximately 5.5 billon rows of data. This takes up a
significant amount of storage space. Instead of creating more tables and
table spaces to hold duplicate data, we decide it would be more efficient
to abstract the data to views that represent the PCORI CDM
2. Standards – Views have become somewhat of a standard for how we
provide access to subsets of data from our data warehouse. This helps
with limiting the exposure to all of our production tables/fields as well
simplifying many of the complex joins that may be required. Since this is
our standard we were able to develop the PCORI CDM views rather quickly
--
Ticket URL:
<http://informatics.gpcnetwork.org/trac/Project/ticket/145#comment:27>
gpc-informatics <http://informatics.gpcnetwork.org/>
Greater Plains Network - Informatics
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