This is why I used the word "claim". The sentence you quoted can be construed to imply that relational databases are relational because of the relationships between tables, but it certainly does not claim that.
I'm not merely nitpicking here, I'm trying to explain that what you perceive as the author's mistake is, in fact, your interpretation. I do, however, completely agree with you in that the text would have been better if the author phrased it in such a way as to deliberately avoid the possibility of that particular interpretation.
I'm not merely nitpicking here, I'm trying to explain that what you perceive as the author's mistake is, in fact, your interpretation. I do, however, completely agree with you in that the text would have been better if the author phrased it in such a way as to deliberately avoid the possibility of that particular interpretation.