I would still be looking to do all that within an RDBMS.

storing millions of rows and hundreds of columns in 2d array if possible

Sure it's possible - if you have enough memory. I just don't see why you would do that when a database is the right tool for the job. There is nothing you have said here to suggest to me that it isn't.

🦛

In reply to Re^3: database and deployment questions by hippo
in thread Newbie question by SpaceCowboy

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