I think you underestimate how fast modern computer systems are.
I am a professional software developer specializing in database systems and what you might find amazing is some of our tables contain well in excess of 100,000,000 rows and in most cases (with correctly structured queries) it is possible to retrieve a row of information from that table in fractions of a second and this is running on very low end hardware as compared to the resources of a company such as ASX.
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