multiple IDs as linked data

Hello,

in my dataset there are several IDs for each record and I'm working on
publishing this dataset as linked data.

Is there any dictionary provisioning means to express IDs ? Or have I to
make my own dictionary ?

The reason why there are several IDs for each row, is that this is a
collection of items coming from several different databases, differently
operated through the years.

It's a collection of political texts ranging from the forties to today.

The attributes of each record are quite simple, I managed to map them to
Dublin Core and Schema.org properties easily.

But this IDs thing is harder.

Thanks for any hint