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Our consultants come armed with both technical and soft skills to support you to make the most of your data.
The Data School has been paramount to our success at JLL. It has allowed us to bring in highly skilled Tableau and Alteryx consultants. It saves considerable time trying to recruit contractors as I know their skills and training are to the highest standard. Over the past 5 years my team has developed analytical insights which have generated multi million dollar savings of which a considerable amount can be attributed to the Data School consultants we have had working on projects.
Paul Chapman, Global Director of Performance Management, BI and Innovation at JLL
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What our consultants are working on
We believe that sharing knowledge and expertise is key to driving innovation and growth in the data community. That's why we're excited to share our latest insights, tutorials, and industry trends with you through this blog.
Written by our team of experienced data consultants, these posts aim to solidify their own learning while giving back to the community.
Sun 09 Aug 2026 | Melissa Osorio
Continuous and discrete dates in Tableau
How to make sense of them
When doing date visualisations in Tableau, it can occur quite frequently that when the date is added on to a graph, there a continuous date line appears when the needed outcome was to compare the different quarters of the data as bars
Tue 11 Aug 2026 | Marcus Rocco
Data Analyst vs. Data Scientist vs. Data Engineer: What’s the Difference?
Data in Modern Business
Data is used across nearly every part of a modern business.
Organizations use it to understand customers, track performance, improve operations, identify opportunities, predict outcomes, and support better decisions.
But simply having data is not enough
Sun 09 Aug 2026 | Nika-Kare Pierre-White
Column vs Measure Calculations in Power BI
In Power BI there are two types of calculations, Columns and Measures. Both are created using Data Analysis Expressions (DAX).
Columns
what are they?
Columns are calculations which are calculated row by row in a table. It produces a new column and is stored within the table
Tue 11 Aug 2026 | Jalil Cooper
Change the Way you Analyze Data: Standard Deviation
When you first learn descriptive statistics, standard deviation is often a part of that set of foundational concepts
Tue 11 Aug 2026 | Dylan Serino
How to Create a Bump Chart in Tableau
Bump charts are a type of line graph that is designed to show the changing rankings or positions of multiple values across a period of time. It focuses on changes in rank instead of exact numerical values to highlight trends, winners, and losers
Tue 11 Aug 2026 | Dev Bhatnagar
Why are relational database models still important?
(part 1 understanding the schema)
In my first year of college I learnt about relational database models using mySQL to query a vintage auction site which we created
Tue 11 Aug 2026 | Helena Reichenvater
Teaching Tableau to Beginners
A little while back, DSNY12 taught around 50 members of the public the basics of Tableau and Tableau Prep in a full-day of learning at our offices in NYC.
Here is what I learned from that experience, and how my approach to teaching in general was shifted
Tue 11 Aug 2026 | Stephanie Pichardo
Tableau Pulse, Explained: Key Considerations
Tableau Pulse was launched by Tableau in 2024 as part of the Tableau Cloud ecosystem. It integrates time-based metrics and natural language processing in order to reach business users who are less dashboard-heavy
Tue 11 Aug 2026 | Stefani Hermanto
How to Connect Color Gaps in Tableau Line Graphs
Say you have a line graph with a parameterized date range. You want the selected range to be a different color than the rest of the graph, but Tableau gives you something like this:
If you've ever been there, don't panic! The fix is quite simple
Tue 11 Aug 2026 | Helena Reichenvater
Batch Macros in Alteryx
What is a macro?
A macro is a tool you can use in Alteryx that allows you to save a set of premade steps that you can add to your workflow at any time. There are different kinds of macros that can be used for different kinds of data and analyses
Tue 11 Aug 2026 | Gerard Najarro
Prepping for the Tableau Data Analyst Exam
I recently took the Tableau Desktop Certified Data Analyst exam, and I wanted to write up how I prepped for it. Looking at what I focused on, when, and why
Tue 11 Aug 2026 | Stefani Hermanto
How to Create a Parameterized Control Chart (With Dots!) in Power BI
Control charts are a great way to visualize stability in a dataset, and they are quite straightforward to implement in Power BI. Adding dots over each point, however, requires a bit of a hacky workaround. In this blog, I'll show you how to implement this from start to finish
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