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[amibroker] Mixed EOD/Intraday data limitations?



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1. If eSignal has up to 12 years of intraday data (for U.S. stocks) and
in some instances 20+ years of EOD data, will amibroker be able to hold
all of that data in a mixed EOD/intraday database?

For SPY it appears as though my mixed EOD/intraday database has daily
data from eSignal going back to 1999, while SPY itself has data going
back to 1993. So I suspect the answer to question 1 is no, but as a new
user, I could be missing something.

2. As new real-time intraday data arrive do the older data in the mixed
EOD/intraday database get eliminated?

3. If  the answers to 1 and 2 are no and yes, respectively, then it
seems to make sense to have two databases, one for long daily histories
and the other for intraday histories. If that's the case, is it possible
to combine these data in a backtest if they are from two different
databases?

4. Is the 500000 bar limit for 1-minute data a hard and fast limit?
That's approximately 5 years of daily data given 6.5 hour trading days.
What if one's data source has longer 1-minute histories? Can these
somehow be imported into amibroker (for example by exporting them from
the data source and importing an ASCII file to amibroker--could the data
be split up over multiple tickers)?

Regards,
Ray Micaletti




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