You don't access a database like that: you need an application to access the data. For MySql, that would probably be
MySQL Workbench[
^] or
HeidiSQL[
^] - for SQL Server, it's SSMS which is available as a separate download these days:
Download SQL Server Management Studio (SSMS) | Microsoft Docs[
^] but that won't work with MySQL IIRC.
That doesn't solve the whole problem though: you need to create an account for them with suitable permissions and make sure that the DB is available remotely:
mysql remote access - Google Search[
^] then give them the username and password combination.
And then do two other things:
1) Back that sucker up frequently!
2) Start hoping they don't muck the DB up as it'll probably crash your site and they will blame you...
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