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Sender: "Team Ada: Ada Advocacy Issues (83 & 95)" <[log in to unmask]>
From: Gilbert Prine <[log in to unmask]>
Date: Sun, 11 Oct 1998 19:03:24 -0400
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Reply-To: Gilbert Prine <[log in to unmask]>
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>>it can be an effective custom database engine for any table with less than 4
>>billion rows.

>What is the source of the magic number 4 Billion ?

The maximum value of Count and Positive_Count in direct_io are
implementation defined.  On two compilers that I have worked with they were
equivalent to long_integer which was defined as 32 bit.  If an
implementation defined them and long_integer as 64 bit, then I guess then 4
billion ** 2 rows would be easy to work with.