I have not dug into this topic however, I would be a little dubious of deleting this database.
some more round about this topic ref: https://discussions.apple.com/thread/8137847
Its not huge gain here—your 4.4GB of media
but if you have storage issues there may be safer places to retrieve 4.4GB
Provide a quick breakdown by folder in descending order of used GB , from the Terminal.app , copy & paste:
sudo ** -gs /Users/YourUserNameHere/* | sort -k 1nr
(please note: your psswd will not echo, type it in anyway, to proceed Enter/Return key)
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How to free up storage space on your Mac - Apple Support
https://support.apple.com/en-us/HT206996
User tip: "Other and What Can I Do About It ?"
https://discussions.apple.com/docs/DOC-5142
Try something likeOmniDiskSweeper for a GUI to get a good look at itemized file size and location:
OmniDiskSweeper http://www.omnigroup.com/more
Others for example—
Disk Inventory X: http://www.derlien.com/ (takes forever to load up.)
Grand Perspective: http://grandperspectiv.sourceforge.net/
Or alternatively from the Terminal.app, more detail copy and paste the command line:
File size, and finding missing GB— list the items in the home folder with the sizes, including invisible items.
sudo ** -h -d 1 ~/
File size, and finding missing GB —will list the items in root with the sizes, including invisible items.
sudo ** -h -d 1 /
.