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3NF, Data Vault, Star Schema: Which Method Belongs in Which Layer
The conceptual model is finished, and from here on it gets built. The shortest implementation route from source to finished report is the one that skips a whole layer of the architecture, and it works, too — for as long as the assumptions behind it hold.
What Does “Employee” Mean? The Conceptual Model
How many employees do we have? Yerodin has been asking for three weeks. He does get answers, just a different number every time, and not one of them comes with a reason why that one should be the right one. Nothing is missing in the systems, not a row and not a status, and something is missing all the same — it simply never got written down, because nobody ever decided it.
The Three Levels — and the One That Gets Skipped
How many vehicles does Sales actually use? That is the kind of question you assume is already answered before you ask it. The table shows which person belongs to which vehicle, and it is well maintained — no gaps, nothing null. What it does not tell you is whether that person was assigned the car or actually drove it, and the answer turns on exactly that.
Read more …As a long-standing partner of TEDAMOH, we would like to express our enthusiasm and appreciation for the cooperation in our Smart Factory project. One of our outstanding achievements was the successful implementation of a fully automated production line at our plant in Bamberg.
Read more …First of all, I would like to emphasize that preparing for the DMC was a challenging but absolutely rewarding experience. In order to pass the exam successfully, I focused on different methods:
Read more …The training is highly recommended because the complexity and added value of modelling becomes clear. It is also comprehensive and covers all aspects of modelling. Everyone benefits from modelling!
Read more …As a result, the team's knowledge, identification with, and trust in the data model are at a high level. This is very good, because we are facing great challenges on our way to becoming a data-driven company.