Can I change the name of the database?

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Not sure if this is the correct forum for my question, but many years ago I did a website for my dog club and used index.html as the home page so when creating the database, I used my url/index soooo when one types in the url, it does not go to the home page, it goes to an index page you have to click on to get to the home page. ugh. My son is working on this for scouts and he's put a bit of time into it, so I would prefer to be able to change the database name or redirect to "home" but I have no idea how.

Any suggestions?