Data Vault Ensemble Modeling

Making Sense of Schema-On-Read

Kent Graziano, Snowflake Computing

With the increasing prevalence of semi-structured data from IoT devices, web logs, and other sources, data architects and modelers have to learn how to interpret and project data from things like JSON. While the concept of loading data without upfront modeling is appealing to many, ultimately, in order to make sense of the data and use it to drive business value, we have to turn that schema-on-read data into a real schema! That means data modeling! In this session I will walk through both simple and complex JSON documents, decompose them, then turn them into a representative data model using Oracle SQL Developer Data Modeler. I will show you how they might look using both traditional 3NF and data vault styles of modeling. In this session you will:

  1. See what a JSON document looks like
  2. Understand how to read it
  3. Learn how to convert it to a standard data model

Kent Graziano is the Chief Technical Evangelist and Sr Director Customer Advisory Solutions for Snowflake Computing. His is an award winning author, speaker, and trainer, in the areas of data modeling, data architecture, and data warehousing. He is an Oracle ACE Director – Alumni, member of the OakTable Network, a certified Data Vault Master and Data Vault 2.0 Practitioner (CDVP2), expert data modeler and solution architect with more than 30 years of experience, including two decades doing data warehousing and business intelligence (in multiple industries). He is an internationally recognized expert in Oracle SQL Developer Data Modeler and Agile Data Warehousing. Mr. Graziano has developed and led many successful software and data warehouse implementation teams, including multiple agile DW/BI teams. He has written numerous articles, authored three Kindle book (available on, co-authored four books (including the 1st Edition of The Data Model Resource Book), and has given hundreds of presentations, nationally and internationally. He was a co-author on the first book on Data Vault, and the technical editor for Super Charge Your Data Warehouse. In 2014, he was voted one of the best presenters at OUGF14 in Helsinki, Finland. You can follow Kent on twitter @KentGraziano or on his blog The Data Warrior (