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  • Experience with the data vault

    The data vault is a data warehouse design structure which varies from traditional data warehouse architecture in several ways including the practice of separating the “thing” from how this thing changes over time. For example, there is something about a Customer that could never change over time,...

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    Steve Hoberman
  • Observations on the data modeling profession

    Here are three observations I plan on making at Data Modeling Zone that summarize the last 12 months on our data modeling profession: Our customer, the data scientist. I am finding more and more, a strong overlap between the activities of a data modeler and those...

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    Steve Hoberman
  • Impact of a global ledger

    My brother was recently explaining Blockchain to me, and how it can revolutionize areas such as commerce and healthcare. If we look at Blockchain from a business perspective, it is a global ledger system. Similar to how Global Trade Item Number (GTIN) is a unique identifier...

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    Steve Hoberman
  • Can a developer read an entity/relationship diagram?

    During a recent data modeling training class, someone asked based on my experience, can developers read entity/relationship diagrams? This question was not a jab to developers. (There were quite a few developers in the room!) This question was asked because in this organization, data modelers build data models...

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    Steve Hoberman
  • From VSAM to MongoDB

    An organization facing big data pressures is migrating from VSAM to MongoDB. Although VSAM is 1970s technology, it stores data hierarchically which is very similar in structure to NoSQL document-based databases such as MongoDB. Therefore the data migration from VSAM to MongoDB could be straightforward. However,...

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    Steve Hoberman