Can I edit or delete an entry in a form database?

Yes, you can delete or edit submissions in the Submissions page. Here's a guide:

1. In My Forms, select the form and then click the "Submissions" button.

2. Inside the Submissions page, you can "Edit" or "Delete" a submission.

Related guides:
https://www.jotform.com/help/269-How-to-View-Form-Submissions
https://www.jotform.com/help/325-How-to-Edit-Submissions-Made-on-Your-Forms
https://www.jotform.com/help/377-How-to-Delete-Form-Submission-Data

Hope that helps. Thank you.