Empty JuliaDB

Is it possible to initialize an empty JuliaDB table with columns names?

Yes, it is possible.
This is the source where you can learn it from direct experience (https://github.com/JuliaComputing/JuliaDB.jl/blob/master/docs/src/basics.md) and this is an example of code to instantiate it, once you already added the package:

using	JuliaDB
dblog			=	table((ObjectID=Int[], Iteration=Int[], Events=[],  States=Matrix{Float64}[]); pkey = [:ObjectID, :Iter])

The code it’s just an example, and you should be able to replicate it. In this case, it’s an IndexedTable with 2 primary keys, specified by the ‘pkey’ attribute.
Ánimo con el trabajo!