We recommend to use a generic client to access and manage your MySQL/MariaDB databases.
With a MySQL client you can easily create/view/edit/delete your database/tables and their contents.
Here's a list of free and open source clients (feel free to edit this page to suggest your favourite):
brew cask install sequel-ace
Keira3 is the official Database Editor of AzerothCore.
It allows you to view and edit your world DB contents by automatically generating the SQL code that you need.
Note that Keira3 is not meant to be used as a generic MySQL client, so we recommend to download Keira3 and one of the MySQL clients listed above. They serve different purposes.