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Data Lakes,
Warehouses and
Marts, Oh My!Chris Williams, MD
University of Oklahoma Health Science Center
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OriginalDataWarehouse
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Disclosures
In the past 12 months, I have not had any significant financial interest or other relationship with the manufacturers of the products or providers of the services that will be discussed in my presentation.
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Jargon Free
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Learning Objectives
• What is driving adoption?• Common roadmap for data wrangling• Importance of a strategic approach
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What is Driving Adoption?
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The Why
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The Why
Source: Gartner (February 2014)
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Hospitals are in the information business,
some of them choose to act like it.
The Why
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The Why
timoelliott.com
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The Why
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The Why
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The Why
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The Why
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The Why
https://www.forbes.com/sites/bernardmarr/2016/06/14/data-driven-decision-making-10-simple-steps-for-any-business/
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Data Driven Decisions
1. Start with strategy2. Narrow your focus3. What don’t you know?4. What data do you need5. What data do you have
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Data Driven Decisions
6. Estimate the costs7. Collect the data8. Analyze9. Distribute10.Learn
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Common roadmap for data wrangling
www.datawatch.com/what-is-data-wrangling/
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Data -> Knowledge
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https://panoply.io/data-warehouse-guide/data-mart-vs-data-warehouse/
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Importing Data from multiple systems
Ingesting Data from:
• EHR• LIS• Payor• Billing• HR• Inventory• Etc… weather?
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Importing Data from multiple systems
Date formats:
• Relational (MS SQL, Oracle)• No-SQL (Cache, Mumps, Document Stores)• Text• Excel• CSV• HL7
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Data Warehouse
Typically a relational database to house vast amount of transformed and “cleaned” data
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Enterprise Data Model
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Star Schema
https://bidatapro.net/2018/04/23/what-is-fact-table-in-data-warehouse/
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Data Lake
An unmodified archive of data feeds entering the data warehouse, i.e. native formats, raw, etc...
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Data Lake
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Data Lake
Pros:
• Relatively inexpensive• Revisit the data in its native format• Flexibility• Staging area for POC
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Data Lake
Cons:
• Added cost/complexity• Maintain “current” copies of data• Additional maintenance burden
– The dreaded “Data Swamp”
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https://panoply.io/data-warehouse-guide/data-mart-vs-data-warehouse/
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Data Mart
Smaller collections of data, curated from multiple sources, and formatted for a targeted reporting purpose
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Data Mart
• Often used to refresh Key Performance Indicator reports • Source for Data Visualization tools • Forecasting Models
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Data Lakes, Warehouses, Marts
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Visualization
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Visualization
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Visualization
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Visualization
Trends:
• Moving away from tables• Intuitive dashboards• Interactive, self-service
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Visualization
Examples
• Tableau• PowerBI• Sisense• Many others
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https://panoply.io/data-warehouse-guide/data-mart-vs-data-warehouse/
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Importance of a Strategic Approach
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Strategy
The kernel
Diagnosis
Guiding Policy
Coherent Action
-Richard Rumelt
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Diagnosis
The kernel
Diagnosis
Guiding Policy
Coherent Action
“What is the problem we are trying to solve?”
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Guiding Policy
The kernel
Diagnosis
Guiding Policy
Coherent Action
THINK BIG PICTURE
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Coherent Action
The kernel
Diagnosis
Guiding Policy
Coherent Action
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Lagging Data Maturity
● No strategy in place● Haphazard approach● Data capture is inconsistent and a
consequence of business processes
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Limited Data Maturity
● Recognition of need (Diagnosis)● Lack of Guiding Policy● Data Silos● Data Lag● Inaccessible by end users
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Functional Data Maturity
● Guiding Policy is in Place● Actions are beginning to align● Data Driven Decision Making is being
attempted
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Data Maturity
• Strategy is driving actions• Data is driving models• Decision Making is shifted
– Retrospective -> Real-Time -> Anticipated
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Increasing Data Literacy
Gartner defines data literacy as the ability to read, write and communicate data in context, including an understanding of data sources and constructs, analytical methods and techniques applied — and the ability to describe the use case, application and resulting value.
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Increasing Data Literacy
Users are asking:
• Where is the data coming from / how is it captured• Am I asking the right questions• What assumptions am I making
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Acknowledgements
Dr. David McClintock, Michigan Medicine
Dr. Matthew Atkins, OU Physicians
Dr. Gregory Blakey, OU Physicians
Dr. Dale Bratzler, OU Physicians
Alan Smith, OU Medicine
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Questions?