Is there an alternative to Microsoft Access?

Could you tell me what program other than Microsoft Access, to make such a report in 4 columns:

Number — invoice number — Sender — Receiver

1 — 85456 — A. V. Ivanov — Petrov G. A.
2 — 75845 — Smirnov R. S. — V. I. Makarov

and so on...

Problem: need the second column (Invoice Number) was unique. That is, if X is the invoice number inserted in this column, it is as it is informed and not allowed to re-score the same X number.

I know Microsoft Access and Excel have such a function, but these programs are complicated that it is difficult to manage.
I would like to find a simple program to run this report.

Thanks for the reply.