Search, Information Retrieval

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.

**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.

Central Ohio Radio Enthusiasts—CORE—is an informal community for anyone enthusiastic or curious about radio—whether you're new to radio and want to learn or you've been tinkering for years and want to share. Ham radio operators, GMRS users, Meshtastic fans, software-defined radio nerds, makers, and technical and non-technical folks are all welcome. No experience required or expected. This month we have **WiFi HaLow: Introduction and Practical Use** with **Alex Barbur**. Details are are [core.radio](https://core.radio).

**💘 Speed Dating at Home – A Friendly, Inclusive Space for First Timers!** **⚠️ HEADS UP: Clicking RSVP Isn't Enough!** You **must** sign up through one of the links below and finish the short personality quiz to confirm your place. Choose your age range and register now – **places are limited and fill quickly!** **👇 Select Your Age Group & Claim Your Place:** - **Ages 18-32** → [REGISTER HERE](https://tempodating.com/product?productId=390&productType=onlineSpeedDating&city=Detroit&groupurlname=alpine-frost-love-thaw&ar=18-32&face_v=3.0) - **Ages 30-46** → [REGISTER HERE](https://tempodating.com/product?productId=390&productType=onlineSpeedDating&city=Detroit&groupurlname=alpine-frost-love-thaw&ar=30-46&face_v=3.0) - **Ages 40-58** → [REGISTER HERE](https://tempodating.com/product?productId=390&productType=onlineSpeedDating&city=Detroit&groupurlname=alpine-frost-love-thaw&ar=40-58&face_v=3.0) - **Ages 55+** → [REGISTER HERE](https://tempodating.com/product?productId=390&productType=onlineSpeedDating&city=Detroit&groupurlname=alpine-frost-love-thaw&ar=55+&face_v=3.0) --- 🌈 **Searching for real, genuine connections?** This event was built for you! This Zoom-hosted speed dating experience takes the anxiety out of meeting someone new. You'll have short, structured rounds with friendly Detroit singles – all from wherever you're most at ease. 🎯 **Perfect for:** - Singles who value a guided, hosted dating format - Singles searching for authentic connections beyond the apps - Curious newcomers eager to give speed dating a shot - Introverts who thrive in one-on-one conversations - Remote workers who enjoy the flexibility of virtual meetups **Event Details** - **Format:** Zoom gathering – real-time chats in a chill online space - **Location:** Your own space – the comfiest date venue you could ask for - **Host:** Friendly, professional host focused on making everyone comfortable - **Vibe:** Warm, authentic conversations with Detroit locals searching for real connection - **Matching:** Driven by our personality quiz for stronger compatibility - **Rounds:** Several short rounds so you can meet plenty of people - **Dress code:** Smart casual – look sharp, feel great! - **Tech:** All you need is Zoom, a webcam, and a friendly smile **How It Works** 1. **Register** – Click the sign-up link for your age bracket above. 2. **Take the Personality Quiz** – We’ll pair you with compatible Detroit singles for the best evening possible. 3. **Connect via Zoom** – No setup required. Just click the link and you’re good to go! 4. **Enjoy the Conversations** – Every round is timed and hosted so each chat feels easy and fun. 5. **Your Results** – Check your matches and take the next step with someone special. --- ✨ Real people, real conversations, real connections – all from your living room. 💓 ✨

Rev. Steven Clevenger is an ordained spiritualist minister with over 40 years experience as a Spiritual Healer, Clairvoyant and Spiritual Teacher, educated and trained at the White Lily Chapel. Rev. Siobhan Wolf Shaffer is an ordained spiritualist minister and certified medium and healer with over 20 years experience. She began her development in 1988 in Pennsylvania and continued when she moved to Ohio in 1998 where she studied at Rays of Lights Church with Rev. Steven Clevenger. Our full worship services consist of an inspirational lecture, healing meditation, and messages from the spirit world that serve to demonstrate evidence of eternal life. Please visit our Official Church Website (http://raysoflightchurch.com) for more information.

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: Type Annotations with John Cassidy We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com