There are some domains like building cluster managers where having a relational view of the cluster state and being able to query/manipulate it declaratively ha

There are some domains like building cluster managers where having a relational view of the cluster state and being able to query/manipulate it declaratively has significant perks. See for example: https://www.usenix.org/system/files/osdi20-suresh.pdf https://www.usenix.org/system/files/osdi20-suresh.pdf (disclaimer: I'm an author)