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Data Factory

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Improve DATAFLOW GEN2 around KIMBALL Patterns [1# SNAPSHOTS]

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Bamakus Montreuil on 18 Apr 2024 11:07:54

Improve DATAFLOW GEN2 around KIMBALL Patterns [1# SNAPSHOTS]


  • Offer something similar on DBT cloud to deal with rows snapshots (PK , values , Start_date , End_date)


  • Based a primary key and columns , we need to track changes from Source (security==> SQL instructions to occur ==> only if datetime a business column value on source is >= targeted row one)


  • "BIG revolution" , here on power query as we are on UPSERT or MERGE + INSERT , according to UPDATE an END_DATE system column value on current rows

and create a new ROW based new values ... similar primary KEY (PK , values , Start_date system , End_date system )

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Bamakus Montreuil on 18 Apr 2024 11:35:46

RE: Improve DATAFLOW GEN2 around KIMBALL Patterns [1# SNAPSHOTS]

Also ADD a surrogate key ;>) Will help to manage SLOW CHANGE DIMENSION on the semantic model Snapshot table : surrogate key + business key + rows columns ,where we need to track changes from Source  Merged via LEFT JOIN to a full refreshed table