OWASP

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.

Bring your Raspberry Pi, Arduino, microcontroller, or any other electronic project and join fellow electronics makers for a night of creativity and collaboration! This session is open forum to share your current projects—whether complete or in progress, it’s all interesting! Whether you’re deep into embedded systems, exploring new ideas, or just getting started, you’ll find a welcoming space to collaborate, share, and get inspired. **New to electronics or curious about tinkering?** You’re absolutely welcome. If you’re a beginner and want to experiment, I’ll have a couple of starter kits available so you can try things out—whether that’s blinking your first LED, putting something on a display, or experimenting with simple sensors. No pressure and no experience required—just an interest in learning and building. While we continue to pursue a more permanent venue for this Meetup, we’ll be using public library facilities based on availability. This session will be at the Worthington Park Library in the Olentangy Meeting Room.

Our monthly PHP meetup. A virtual shindig courtesy of Zoom. Check back here for the details around 6:15 pm

**About this Event** Curious how your secure coding skills stack up in real-world scenarios? Join OWASP St. Louis for a **hands-on Secure Code Training Tournament** sponsored by Security Journey. This is not a lecture... you’ll be actively solving real vulnerabilities in a live, interactive environment. **What to Expect** * Hands-on secure coding challenges (break/fix format) * Real-world vulnerability scenarios developers face today * Friendly competition with a live leaderboard * Prizes awarded to the **top 3 participants** **Important Details** * **Laptop required** (you’ll be coding) * Hybrid format: join **in-person or remotely** * Pre-registration required to access the platform * You do not need to be an experienced developer or security expert to participate. The challenges start easy and progress from there. Come have fun! In addition to RSVPing to this Meetup event, please register here to secure your spot and get platform access: [https://forms.office.com/r/VpTMjg8Smw](https://forms.office.com/r/VpTMjg8Smw) Whether you're a developer, AppSec professional, or just getting started, this session is built to sharpen real skills! (\* OWASP does not endorse or recommend commercial products or services, allowing our community to remain vendor neutral with the collective wisdom of the best minds in software security) **Event Details** 📍 **Location:** RubinBrown, 7676 Forsyth Blvd., Suite 2100, Saint Louis, MO 63105 🗓 **Date/Time:** April 28, 2026 / 6:00pm CST **Food and Drink will be provided!** Please RSVP so that we can plan accordingly. ℹ️ **Parking Directions:** * Google map to “North Lyle Avenue & Forsyth Boulevard, Clayton, MO 63105” Link: https://maps.app.goo.gl/WYqyZ3Jv9cUBBF289 * Enter the **Parking Garage #4** (from Forsyth Blvd) next to Dry Bar * **Pull a ticket at the gate** and proceed into the garage, turning right. * Up the ramp is visitor parking. **You may have to go up past the 6th floor.** * **Take elevator to \*L** (Lobby of Centene Plaza C) * Check in at the OWASP sign-in table in the lobby; you'll be escorted up * **Bring your parking ticket with you** to get validated at the meetup. **Who Should Attend** * Application & security professionals * Software engineers and developers * IT leaders and managers * Anyone with an interest in application security * You DO NOT need to be an OWASP member to attend! **About OWASP** The Open Worldwide Application Security Project (OWASP) is a nonprofit foundation dedicated to improving the security of software. Local chapters provide opportunities to learn, network, and collaborate with others in the field. Come to learn more and participate in OWASP Saint Louis - your voice will continue to help shape what OWASP Saint Louis becomes next.

Pay attention! We’re delaying a week for those of you who may be on Spring break and/or celebrating the holiday. Ok, no pancakes, but waffles-a-plenty. Join the local UX and Digital Design community for a casual monthly breakfast. Look for us upstairs!

Will fill in once finalized.

Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you! **What to Expect at the Intro Circle** \~\~\~\~\~\~\~\~\~\~\~\~\~ Near the beginning of the event (1:30 pm), we do a standup: * Organizer announcements, updates, and logistics Round 1 - (7 secs max): * Your name * What you're working on * What you can help others with Round 2: * Community events you wanna plug. If none, that's cool too. Round 3: * Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool. After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!