I am checking if Google Workspace (formerly G Suite) is providing something similar like Access?
For now, there is no explicit replacement of MS Access in Google Workspace.
There are various database solutions inside Google Cloud that could cover your requirements and we got developers realizing further requirements as well. If you explicitly need an easy user interface to access data stored in such databases, we can also recommend Google App Maker which is quite new and allows building small data access apps inside G Suite easily.
We got a video on App Maker as well which was part of our Google Cloud Frühstück. The video and those pages are in German.
Please check our webpage for more information on Google Workspace. As a Google partner we can offer you a 30 day free trial for G Suite. Directly with Google, you would get only 14 days.