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Jan 28
26

Delete and Change Handling Approaches in Data Vault 2.0 without a Trail

By | Scalefree Newsletter | No Comments
In January of this year, we published a piece detailing an approach to handle deletes and business key changes of relationships in Data Vault without having an audit trail in place.
This approach is an alternative to the Driving Key structure, which is part of the Data Vault standards and a valid solution.
Though, at times it may be difficult to find the business keys in a relationship which will never change and therefore be used as the anchor keys, Link Driving Key, when querying. The presented method inserts counter records for changed or deleted records, specifically for transactional data, and is a straightforward as well as pragmatic approach. However, the article caused a lot of questions, confusion and disagreements.
That being said, it is the intention of this blogpost to dive deeper into the technical implementation in which we could approve by employing it. Read More

Dec 19
21

An Efficient Data Lake Structure

By | Scalefree Newsletter | One Comment
Within a hybrid data warehouse architecture, as promoted in the Data Vault 2.0 Boot Camp training, a data lake is used as a replacement for a relational staging area. Thus, to take full advantage of this architecture, the data lake is best organized in a way that allows efficient access within a persistent staging area pattern and better data virtualization.

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Dec 11
19

Data Vault Use Cases Beyond Classical Reporting: Part 2

By | Scalefree Newsletter | No Comments
As we first introduced within the first part of the Data Vault Use Cases article series, the Enterprise Data Warehouse (EDW) can do more than just simple reporting and dashboarding. 

We previously explored how the EDW can help to improve data quality by implementing data cleansing rules. 

This can be applied by write-back operations that affect the source systems directly. Though this was only one example of how to add more value to the EDW.
The scalability and flexibility of Data Vault 2.0 offers a whole variety of use cases that can be realized, e.g. to optimize and automate operational processes, predict the future, push data back to operational systems as a new input or trigger events outside the data warehouse, to name a few.

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