Hi SunnyD. Though I can't speak for the OP, when I asked my similar question,
I assumed, without testing, that a database would be way slower than an in-memory data structure.
Reading all the answers to the reply below (including one by your beloved long lost hero BrowserUk),
shows that SQLite was tried but abandoned as being way too slow:
Update: After browsing an old BrowserUk performance-related Judy array thread,
I see that you stuck your unwanted SunnyD SQLite oar into that thread three times:
