No book could possibly cover the state of database technology today. That cannot be done by a database document.
However, books can assist you in improving your general terminology and concepts, such as b-tree or database engines.
So you unintentionally noticed that MongoDB uses WiredTiger while MySQL uses InnoDB. You do not become alarmed and wonder why a database requires something.
When you open documents on InnoDB or WireTiger with some book vocabulary, you might realize that you actually understand a few words or even a few paragraphs from them, which could help you make better decisions now or in the future.
Books
After reading books on "design data intensive applications" and "database internals", I personally noticed this effect. Although it is an information-heavy book, I found it to be worthwhile.
Design data intensive application
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Database internals
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#database #books #wip