Yes, we all use databases for words and clues.
The word databases, such as the ones available on this site, don't have clues, only words (and some of theme have scores). Usually the word databases are text files that you can import into your software.
Matt Ginsberg's clue database is the most exhaustive collection of clues:
https://tiwwdty.com/clue/ It's free. This is a good source of clues, but many constructors use a lot of "original" clues to make their puzzles more interesting.
For commercial quality puzzles (whether in book form or otherwise) I don't believe it's possible to create them quickly. Those you see in books or newspapers have all been constructed word by word and clue by clue by professional constructors and edited by professional editors.