Am I able to edit submissions?

2. I have a client who submitted a form and then realized a couple of questions were answered incorrectly. Am I able to correct the information directly into your database?  I can't find a way.

Yes you can edit information that were entered by your users:

How to Edit Submissions Made on Your Forms

You can also allow your users to update their form submissions:

How to Let Users Update Their Form Submissions at a Later Date

Hope this will help. Let us know if you need further assistance.