Hi,
The root is the root ; it has no parent.
You should not edit that category and in case you want to rename it ; you can use the Joomla translation system.
After that, if you change directly the name (and just the name) in the Database ; you won't break anything.
But if you change the type of the category into something else ; that's a lot different.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.