[Koha] Upgrading Koha from 3.06 to 3.14

Hi all, I installed Koha 3.06 from the source few years back. Recently, I have also installed Koha 3.14 using koha-common into another machine. My queries are: 1. I was wondering if there is a way to upgrade the database of Koha 3.06 to 3.14. 2. Or can we upgrade the Koha 3.06 to 3.14 using Koha 3.14 source? Thanking you, Dibyendra Hyoju