# Problem with replacing data **URL:** \ **Category:** Ask for Help\ **Tags:** data-sync\ **Created:** [July 30, 2023, 8:09pm UTC](https://community.glideapps.com/t/problem-with-replacing-data/64524 "2023-07-30T20:09:15Z")\ **Posts on this page:** 1\ **Showing post:** 10
**Author:** ![Jeff\_Hager](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/jeff_hager/32/43_2.png) [@Jeff\_Hager](https://community.glideapps.com/u/Jeff_Hager)\ **Post date:** [July 31, 2023, 11:18pm UTC](https://community.glideapps.com/t/problem-with-replacing-data/64524/10 "2023-07-31T23:18:22Z")
Here are some videos that may be useful if you haven’t seen them. > [@🛡️Roles and Row Owners DEMYSTIFIED](https://community.glideapps.com/t/roles-and-row-owners-demystified/22956): > > wave Hey all, I meant to share this earlier today—I spent some time last night playing around with Row Owners and Roles (two Glide features I don’t often get the chance to use) and ended up learning quite a bit. The result? Another tutorial video for you all about how and when to use Row Owners and Roles, their benefits and limitations. Enjoy! [[Glide: Row Owners and Roles DEMYSTIFIED] ](https://www.youtube.com/watch?v=RmMLZINOwjQ) Wondering WHY you can’t assign row owners to a computed column (If then else, lookup, template… > [@thinking Row Owners vs. User Specific Columns](https://community.glideapps.com/t/row-owners-vs-user-specific-columns/58205): > > Row Owners and User Specific Columns in Glide both provide a way to secure, privatize, and personalize user data, but which one should you use in your no code app? Join me as I walk you through a few different scenarios as to when you’d use each (and when you WOULDN’T use either!). [[Glide: Row Owners vs. User Specific Columns] ](https://www.youtube.com/watch?v=sclFwC6eov8)play_button User Table vs Profile Tableplay_button Demystifying Roles and Row Owners > [@locked\_with\_key Secure Your Data with Row Owners and Public Profiles](https://community.glideapps.com/t/secure-your-data-with-row-owners-and-public-profiles/52139): > > wave Hey fellow Gliders! Are you using Row Owners and Public Profiles to secure your user data? If not, you might accidentally expose private info. Let’s fix that. In this important tutorial, I demonstrate how and why to enable Row Owners, create a Public Profiles table, and onboard new users in order to safely create a community app that doesn’t reference the User Profile table. [[Glide: Secure Your Data with Row Owners and Public Profiles] ](https://www.youtube.com/watch?v=JPgZeDSPQMw) You can also reference this article in… Row limits are definitely a consideration depending on how much data you have. I personally have not worked with big tables. There are some minor limitations as far as using some computed columns with them. Also the fact that only small chunks of data are sent to the user device at any one time. Normal tables send all data to the user device immediately when they open the app. Also, if multiple users are updating data in a big table, it does not automatically sync to all other user devices. That new data needs to be refreshed by the user. This is unlike normal tables, which keep everything in sync on team time. But it all depends on what you need and how you will use that data. For the most part, they should work very similar to normal tables. --- _[View the full topic](https://community.glideapps.com/t/problem-with-replacing-data/64524)._