I picked up Dagger maintenance about 2 years ago, when I joined the JuliaLab; previous to that, it was basically unmaintained, except for minor fixes for JuliaDB. Today, Dagger is very actively maintained by myself and @krynju.
JuliaDB, on the other hand, is still struggling to stay maintained, although people like @quinnj have done a lot of work to get it back up to date with the ecosystem and keep it functioning. But I would be hard-pressed to say that JuliaDB is actively maintained right now.