First set of 5x5 Speed Presenting Updates: 1) Core Business Concept 2) Ensemble Modeling 3) Re-Defining the Link 4) Re-Defining the Satellite 5) Architectural Layers

1. Presenter:
Date:
Note:
Company:
eMail:
Twitter:
Hans Hultgren
June 5, 2014
Genesee Academy
Hans@GeneseeAcademy.com
gohansgo

2. Core Business Concept is the #Entity, Master
Data Component, or #Dimension that the
Business actually Works with.

3. The level where the Business actually most
commonly uses the Concept…

4. Not a Super-Type…

5. Not a Sub-Type or lower specification

6. Sale
Cust
L_Buyr
Evnt
Prsn
L
Type
L
Type
Sale
Retrn
Purch
Cust
Emp
Vend
L
Type
Buyer
Seller
…

7. Presenter:
Date:
Note:
Company:
eMail:
Twitter:
Hans Hultgren
June 5, 2014
Genesee Academy
Hans@GeneseeAcademy.com
gohansgo

8. Separate the things that change from the
things that don’t change. DV Ensemble
Conforms to a Single Key

9. Maintain the KEY DEPENDENCYof Context
Attributes. But apply #UnifiedDecomposition
to reduce the modeling impact of changes.

11. Presenter:
Date:
Note:
Company:
eMail:
Twitter:
Hans Hultgren
June 5, 2014
Genesee Academy
Hans@GeneseeAcademy.com
gohansgo

12. Links are based on a Unique, Specific, Natural
Business Relationship. Each naturally existing
relationship should be modeled individually.

13. The Link contains only: 2-n FKs for the
Relationship + 3 Untouchables:Surrogate Key,
Load Date/Time, and Record Source
L_Cust_Class_SID
H_Customer_SID
H_Sequence2_SID
Date/Time Stamp
Record source
L_Cust_Class

14. Transactions are also #CoreBusinessConcepts.
So they will decomposedinto a full #Ensemble
including a Hub, Link(s) and Satellites.

15. Transactions are also #CoreBusinessConcepts.
So they will decomposedinto a full #Ensemble
including a Hub, Link(s) and Satellites.
A TransactionalLink differsfrom a Link because
it has a unique identity (similar to a 3NF Entity).

16. Presenter:
Date:
Note:
Company:
eMail:
Twitter:
Hans Hultgren
June 5, 2014
Genesee Academy
Hans@GeneseeAcademy.com
gohansgo

17. All Context + All History
Can only describe the Key of the Hub/Link
Can have no #ForeignKeys

18. As part of Ensemble:
Has no Meaning except in relation
to the Whole
Multi-Valued means key is not the same as Hub

19. Can hold a CODE reference to a Dis-Connected
Concept. When #Code is adequate context by
itself & downstream joins are rare (<= 5% time)
Customer Hub
H_Cust_Seq_ID
Customer_Number
Date/Time Stamp
Record Source
Href_Customer Type
H_Cust_Type_Seq_ID
Cust_Type_Code
Date/Time Stamp
Record Source
Customer Sat
H_Cust_Seq_ID
Date/Time Stamp
Cust_Name
Cust_Type_Code
Record Source
Customer Type Sat
H_Cust_Type_Seq_ID
Date/Time Stamp
Cust_Type_Description
Record Source

20. Assuming Dis-Connected Concept is a Core
Business Concept related to that subject area,
it can also be Promoted easily.
Customer Hub
H_Cust_Seq_ID
Customer_Number
Date/Time Stamp
Record Source
Href_Customer Type
H_Cust_Type_Seq_ID
Cust_Type_Code
Date/Time Stamp
Record Source
Customer Sat
H_Cust_Seq_ID
Date/Time Stamp
Cust_Name
Record Source
Customer Type Sat
H_Cust_Type_Seq_ID
Date/Time Stamp
Cust_Type_Description
Record Source
Cust_/_Cust_Type_Link
H_Cust_Type_Seq_ID
H_Cust_Seq_ID
Date/Time Stamp
Record Source

21. Presenter:
Date:
Note:
Company:
eMail:
Twitter:
Hans Hultgren
June 5, 2014
Genesee Academy
Hans@GeneseeAcademy.com
gohansgo

22. Source-facing auditability and Business-facing
central business view…

23. #LessLayers =
Better!

24. Problem with 1:1 RAW DV in the EDW…
Accounting
Finance
Logistics
Sales
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Accounting
Finance
Logistics
Sales

25. …will need to have a BDW Layer for the EDW
However now can still lose auditable path and
we are tied to a mandatory persisted layer…
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Accounting
Finance
Logistics
Sales
Accounting
Finance
Logistics
Sales
BDV

26. Can instead practice “RAW Integration” to
maintain auditable path and reduce layers.
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Star n…
Acctg / Fin
Sales
BDV
Sales
Accounting
Finance
Logistics
RAW BDV

27. How Much can be done #InMemory?
#Virtualized?