> ## Documentation Index > Fetch the complete documentation index at: https://domoinc-openapi-sync-dataflows.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # FAQ ### AppDB *** \*\* Q: I configured my AppDB collection in the manifest correctly, why can't I see the dataset? \*\* **A**: The dataset can sometimes take up to 15 minutes to show in the data center assuming that you setup the collection correctly the first time. If it is not setup correctly, there is not any feedback you will get in the data center to tell you why. Once the dataset has been successfully created the first time, however, any errors regarding updating that dataset will appear in the history tab of the dataset. The dataset that is created by AppDB will follow the following naming convention: ```text theme={"dark"} {collectionName}_{collectionUUID}_APP_DB ``` ### Data *** **Q: How can I leverage enhanced data analysis in my app?** **A**: You should leverage Domo as your backend service to perform the necessary data transformation and analysis as much as possible. Domo offers data transformations via Blend, ETL, SQL, or R. Additional options include Workbench plugins, custom connectors, and custom services that leverage the Domo APIs. However, if your app does need to do any additional analysis on the front-end, you’re able to use any JavaScript library that provides that functionality, such as JsStat. **Q: Can I create datasets from a Domo App?** **A**: Yes. You can persist your application data to an AppDB datastore (which can optionally sync back to a dataset that it creates). **Q: Can I query any dataset from an App?** **A**: The Domo App platform exposes a data query API for datasets that have been listed in your app’s manifest, which defines the datasets that are wired to the app. Your app is not able to look at other datasets in your Domo instance. \*\* Q: Can I leverage 3rd party APIs to get, post, or transform data? \*\* **A**: Yes, as long as your 3rd party API supports requests from other domains (ref CORS ) you’re able to consume those APIs in your app. **Q: Do Domo Apps use real-time data?** **A**: Yes. Domo Apps have the same direct access to datasets that standard Domo cards have. Just like standard cards, your app will automatically refresh each time the underlying dataset is updated. Please refer to this documentation that details how to customize the default behavior [onDataUpdate](/portal/Apps/App-Framework/Tools/domo-js#domo-ondataupdated-callback). **Q: Can I query datasets using SQL?** **A:** Yes, for more details checkout the SQL section of [the Getting Data Guide](/portal/Apps/App-Framework/Guides/getting-data#sql-api). \*\* Q: Is there a limit on how many data sources I can feed into my App? \*\* **A:** There is currently a limit of 100 data connections per Custom App. ### Design *** **Q: Do Domo Apps support a responsive design?** **A**: Absolutely. By setting `full-page: true` in your manifest file your app will grow to fill the remaining screen space on the detail, fullscreen, and mobile. **Q: Why isn’t my app resizing as the window resizes?** **A**: Domo Apps will maintain the grid size that you specified in your manifest when viewed at the page level in Domo. If `fullpage` hasn’t been enabled, your app will also maintain that same size when viewed at the detail level. **Q: How can I make an App full screen?** **A**: Assuming you’ve configured `fullpage: true` in your manifest, you’ll be able to open your app in full screen by going to the detail view of the app and selecting the fullscreen option in the card menu. **Q: Does the Mobile app support Domo Apps?** **A**: Yes, but the mobile experience will only be as good as your app’s responsive design. If your app doesn’t accommodate for a mobile screen size then it will be a suboptimal experience for your user. **Q: How do I add a thumbnail to my project?** A: To ensure your app has a thumbnail, place a 300×300 image named `thumbnail.png` in the base directory of your design. A basic hello world project will likely have all of the following files in the base directory of the project and the thumbnail should be included right alongside them. Once the thumbnail is present in your project, simply publish your design to your instance using the `domo publish` command. https://web-assets.domo.com/miyagi/images/product/product-feature-dev-portal-project-with-thumbnail.png If you forget to upload your project with a `thumbnail.png`, you will be reminded by the CLI that you cannot create cards off of the design until you re-publish to that design ID with a thumbnail available at the root of the project. ### Limitations *** **Q: Ok, Apps seem to be pretty awesome. What can they not do?** **A**: Apps currently don’t have access to some of the core product features available to standard cards, such as alerts, Buzz, data export, and export to slideshow. However, if you have a custom use-case you can reach out to Engineering Services who can help you leverage additional Domo functionality. **Q: Can I publish a backend service with my front-end Domo App?** **A**: No. Where possible you should leverage the Domo Platform for your backend processing. Consider how AppDB might be used to solve your backend needs. **Q: Can I export data from the card details page in Domo?** **A:** The following Export commands from the card details page are not currently supported: Custom Apps do not currently support viewing in an external slide show **Q: Can Custom Apps cards leverage Domo Alerts?** **A:** Custom App cards do not currently support Alerts. ### Navigation *** **Q: Can I navigate to other places within Domo from my app?** **A**: `domo.navigate` allows you to link users to other pages in Domo as well as external domains. Refer to the [navigate](/portal/Apps/App-Framework/Tools/domo-js#domo-navigate-url,-isnewwindow) command in the `domo.js` library for more information. ### Security and Access Control *** **Q: Do I have access to Domo Parent DOM from an App?** **A**: No. Domo Apps are completely sandboxed from your Domo instance to prevent potential security issues. **Q: Do Domo APIs support Domo Apps?** **A**: For security, the General Domo Product APIs can only be called from backend services. Because Domo Apps are front-end services only, you’re not able to call those APIs directly from an app. See the "API References" section for more information about what Domo Apps specific APIs are available for use. **Q: How can I link to sites external to Domo in my App?** **A:** Regular html link syntax does not work inside the app iframe. For example, the following will not work: \Dev Portal\ For security reasons, Custom Apps can link only to approved, whitelisted domains via the `domo.navigate()` function available on the `domo.js` library. The current list includes: You may customize this whitelist, but will need to request a feature switch to be enabled by your CSM. See the `domo.navigate()` command [for more information here](/portal/Apps/App-Framework/Tools/domo-js#domo-navigate-url,-isnewwindow). ### Tech Stack *** **Q: Can I use my favorite front-end framework/library in an app?** **A**: Absolutely. Any JavaScript library/framework that you use in your other projects should work in a Domo App. Check out [Domo's App Starter Kits](/portal/Apps/App-Framework/Quickstart/Starter-Kits) for React, Angular, and Vue templates.