--- title: "Training FAQ: Security" description: "Training FAQ: Security" image: https://info.stardog.com/hubfs/Video%2019_%20Security.png --- [![StardogLogo](https://info.stardog.com/hs-fs/hubfs/StardogLogo.png?width=150&height=43&name=StardogLogo.png "StardogLogo")](https://www.stardog.com/) - [Product](https://www.stardog.com/platform/) - [Solutions](https://www.stardog.com/use-cases/) - [Services](https://www.stardog.com/professional-services/) - [Customers](https://www.stardog.com/customers/) - [Resources](https://www.stardog.com/resources/) [![Start for free](https://no-cache.hubspot.com/cta/default/6618383/eb383535-0a1c-45b1-88dd-f8da1ec976e5.png)](https://cta-redirect.hubspot.com/cta/redirect/6618383/eb383535-0a1c-45b1-88dd-f8da1ec976e5) [![StardogLogo](https://info.stardog.com/hs-fs/hubfs/StardogLogo.png?width=252&height=73&name=StardogLogo.png)](https://www.stardog.com/) ![StardogLogo](https://info.stardog.com/hubfs/StardogLogo.png) - [Product](https://www.stardog.com/platform/?_gl=1*102eolq*_gcl_au*ODIyMjk1NDcxLjE3ODAwMzk5MjA.*_ga*MTA0NTAzMzc2NS4xNzgwMDM5OTIw*_ga_L51NFLYXJJ*czE3ODE0OTc1NjUkbzM4JGcxJHQxNzgxNTAwNTM2JGo2MCRsMCRoMA..) - [Solutions](https://www.stardog.com/use-cases/) - [Resources](https://www.stardog.com/resources/) - [Company](https://www.stardog.com/company/about/) [Get Started Free](https://www.stardog.com/stardog-cloud/) ## Stardog Academy Training FAQ: ## Security   ****![Screen Shot 2020-06-17 at 11.42.02 AM](https://info.stardog.com/hs-fs/hubfs/Screen%20Shot%202020-06-17%20at%2011.42.02%20AM.png?width=20&name=Screen%20Shot%202020-06-17%20at%2011.42.02%20AM.png)** Why should I prefer assigning permissions to Roles instead of Users?**   Roles allow you to manage permissions of potentially large sections of Users in one place and easily change an individual User’s permissions if their role in the organization changes.  ****![Screen Shot 2020-06-17 at 11.42.02 AM](https://info.stardog.com/hs-fs/hubfs/Screen%20Shot%202020-06-17%20at%2011.42.02%20AM.png?width=20&name=Screen%20Shot%202020-06-17%20at%2011.42.02%20AM.png)** What are Effective User Permissions?**   Effective User Permissions are the Permissions that a given User has both explicitly assigned and granted via membership in Roles.   ****![Screen Shot 2020-06-17 at 11.42.02 AM](https://info.stardog.com/hs-fs/hubfs/Screen%20Shot%202020-06-17%20at%2011.42.02%20AM.png?width=20&name=Screen%20Shot%202020-06-17%20at%2011.42.02%20AM.png)** How do I make a User into a Superuser?**   Unfortunately, Superuser is a flag that can only be set at User creation time.   ****![Screen Shot 2020-06-17 at 11.42.02 AM](https://info.stardog.com/hs-fs/hubfs/Screen%20Shot%202020-06-17%20at%2011.42.02%20AM.png?width=20&name=Screen%20Shot%202020-06-17%20at%2011.42.02%20AM.png)** Is it possible to have a server with no Superusers?**   Stardog will not let you disable or delete a Superuser if there would be no more active/enabled Superusers left in the system. When using LDAP or Kerberos authentication it is theoretically possible, however, those systems would then allow the creation of others. ****![Screen Shot 2020-06-17 at 11.42.02 AM](https://info.stardog.com/hs-fs/hubfs/Screen%20Shot%202020-06-17%20at%2011.42.02%20AM.png?width=20&name=Screen%20Shot%202020-06-17%20at%2011.42.02%20AM.png)** My User has read permission on a database; why can I see no query results?**   The most common cause for this is when Named Graph Security is enabled. By default, with Named Graph Security unless a User also has read permissions for at least one named graph in the database, it will appear to them as an empty database.   ****![Screen Shot 2020-06-17 at 11.42.02 AM](https://info.stardog.com/hs-fs/hubfs/Screen%20Shot%202020-06-17%20at%2011.42.02%20AM.png?width=20&name=Screen%20Shot%202020-06-17%20at%2011.42.02%20AM.png)** I’m using LDAP authentication; why can’t I create a User?** When delegating authentication to an LDAP server, Stardog no longer manages the list of Users and Roles; it only manages their Permissions. To create a new User, you would need to create it within the LDAP system, at which point Stardog could manage its Permissions.     ![Stardog-logo-lockup 180px-2](https://info.stardog.com/hs-fs/hubfs/Stardog-logo-lockup%20180px-2.png?width=90&name=Stardog-logo-lockup%20180px-2.png)