Advanced SQL Server

The Fellowship of the Star Schema: Transforming OLTP Data for Power BI One does not simply build reports on OLTP data. Join us on an epic journey from the depths of raw, normalized tables to the shining halls of a well-modeled star schema fit for Power BI greatness. We will demystify the differences between OLTP and OLAP, walk through star schema vs snowflake (and why Power BI has a clear favorite), and show you the compression differences between normalized and columnar storage that will make you never look at an OLTP model the same way again. We will cover the different types of dimensions, when to use them, and how to handle Slowly Changing Dimensions without losing your mind. You will leave knowing exactly how to identify a bad model, how to convert OLTP data into a clean star schema, and how to forge relationships that rule them all. Whether you are a data wizard, a curious hobbit, or somewhere in between, your models will never be the same.

If you are interested in selecting investment choices for your 401(k) or other workplace savings plan, minimizing your income tax liability, or identifying the most effective investments for your brokerage account, we are the group for you. We are a local chapter of Bogleheads**®**, whose investment strategy can be found here: https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investment_philosophy Or you can peruse the Boglehead forum here: https://www.bogleheads.org/index.php I look forward to seeing you there. Mark Vonder Haar

The April Ohio North Database Training user group meeting will be held on **April 7th, 2026 at 5:00PM**. This will be a **HYBRID** event and we will be joined online by **Kayla Boor**. You're welcome to come meet in-person at our meeting location, the offices of Improving at **[6000 Freedom Square Dr,](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** **[Unit 110,](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** **[Independence, OH 44131](https://www.google.com/maps/place/Improving/@41.4004167,-81.6614462,17z/data=!3m2!4b1!5s0x8830e5b8255c5919:0xd8297060eb68fe04!4m6!3m5!1s0x8830dc7a0fe35dc9:0xbfc4710ecadfc5c!8m2!3d41.4004127!4d-81.6588713!16s%2Fg%2F1hm3hkqp3?entry=ttu&g_ep=EgoyMDI1MDQzMC4xIKXMDSoASAFQAw%3D%3D)** [Teams Link ](https://teams.microsoft.com/meet/22562814501129?p=w1cSxeUXFTVeIpZiMw)if anyone needs it after RSVP-ing for in person. If you would like to subscribe to our email list outside of Meetup, we have changed platforms recently and you will need to register [here in Kit ](https://ohio-north-data-training.kit.com/b8f036f615)instead to receive emails. Agenda: **5:00 PM EST**: Online and in-person meeting begins with a social hour. This is an unstructured hour where you can join us to catch up and meet other group members before the session starts. There will be food brought in for in-person attendees. **6:00 PM EST**: Updates and announcements, followed by our feature presentation. See below for presentation details. **7:30 PM EST**: Optionally after the main presentations, the in-person crowd may go out for snacks and drinks at a local establishment. We hope to see you there! Session Abstract **Accidental friends: How a DBA and an SRE worked together to optimize the system.** This session is focused on how to communicate effectively between teams to improve alert fatigue, performance, and observability. \*\*NEW SPEAKER \*Please note, that we will be using Microsoft Teams for the online portion of this meeting. You may want to join a few minutes early to ensure you do not have any issues. If you are attending in person, there are large TVs at the office, and you do not need to bring a laptop or use Teams.

**Presenter:** All of Us **Time:** Pizza at 6:00, Presentation Starts at 6:30pm Eastern **Location:** Theoris, 9000 Keystone Crossing, Suite 230, Indianapolis Let's have a fishbowl discussion about AI. Has it replaced you yet? Have you replaced it? Somewhere in between? How is AI impacting your career as a software engineer? Looking forward to seeing you there! ### What is a Fishbowl Discussion? [A ](https://www.bing.com/ck/a?!&&p=00b4b265baa395dc4ad7b262d4d6e3b7b7c31b2195941076e51d2eca252c2d02JmltdHM9MTc2MjgxOTIwMA&ptn=3&ver=2&hsh=4&fclid=0e60c23d-2dbf-642d-0fd7-d4512c2b6597&psq=fishbowl+discussion&u=a1aHR0cHM6Ly9lbi53aWtpcGVkaWEub3JnL3dpa2kvRmlzaGJvd2xfKGNvbnZlcnNhdGlvbik&ntb=1)**[fishbowl discussion](https://www.bing.com/ck/a?!&&p=00b4b265baa395dc4ad7b262d4d6e3b7b7c31b2195941076e51d2eca252c2d02JmltdHM9MTc2MjgxOTIwMA&ptn=3&ver=2&hsh=4&fclid=0e60c23d-2dbf-642d-0fd7-d4512c2b6597&psq=fishbowl+discussion&u=a1aHR0cHM6Ly9lbi53aWtpcGVkaWEub3JnL3dpa2kvRmlzaGJvd2xfKGNvbnZlcnNhdGlvbik&ntb=1)**[ is a structured format for dialogue that typically involves two groups: an inner circle (the "fishbowl") and an outer circle. The inner circle consists of a small number of participants who actively discuss a topic, while those in the outer circle listen and observe. This format encourages participation from all members, as individuals from the outer circle can join the inner circle by taking an empty seat when they wish to contribute.](https://www.bing.com/ck/a?!&&p=00b4b265baa395dc4ad7b262d4d6e3b7b7c31b2195941076e51d2eca252c2d02JmltdHM9MTc2MjgxOTIwMA&ptn=3&ver=2&hsh=4&fclid=0e60c23d-2dbf-642d-0fd7-d4512c2b6597&psq=fishbowl+discussion&u=a1aHR0cHM6Ly9lbi53aWtpcGVkaWEub3JnL3dpa2kvRmlzaGJvd2xfKGNvbnZlcnNhdGlvbik&ntb=1)

Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/azure-cbus-2026/

**First meetup of the Columbus AI Engineering group.** We’ll kick things off with a practical, beginner-friendly discussion on: **How LLMs like ChatGPT actually work — and how to build real applications with them.** We’ll cover: * what’s actually happening under the hood (at a high level) * why LLMs behave the way they do (hallucinations, prompt sensitivity, etc.) * how people are building real systems with them today * where things break in practice This will be a **short, informal talk (\~15–20 min)** followed by open discussion and Q&A. Whether you’re an engineer, builder, or just curious about how modern AI systems work, you’re welcome to join. No slides, no fluff — just real conversation about real systems. We’ll hang out afterward and get to know each other.

http://photos2.meetupstatic.com/photos/event/2/a/9/6/600_348310902.jpeg Instructor - Crow, HPS Class fee is $30 at the door or approved exchange RSVP with Advance pay of $25 (discounted) by PayPal on the web or by contacting Enchanted Elements (614) 437-2642. Reservations made directly to Enchanted Elements will be added to the class list manually not online. Private Instruction ~ Closed to the Public ~ Initiated Members Only Please come prepared for ritual. Blessings ~ Crow