> This movement toward the data base is in its infancy. Even so, it appears that there are now between 1,000 and 2,000 true data base management systems installed worldwide.

Imagine what technology right now exists where the numbers are small, which over the next few decades will be so common place. I would love to be an investor with foresight.

The URL just points back to the HN article.

It looks like the URL should be the following, which is a freely downloadable PDF from 1973 with the right title:

https://dl.acm.org/citation.cfm?id=362534

We put http://www.jdl.ac.cn/turing/pdf/p653-bachman.pdf in as the url since it goes to the article directly.