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Why does dbmopen create two files?

( #34138=categorized question: print w/ replies, xml ) Need Help??
Contributed by Anonymous Monk on Sep 27, 2000 at 04:49 UTC
Q&A  > database programming


Description:

When I create a database using dbmopen, e.g.

dbmopen( %DB, $datapathname, 0666 ) or die;
dbm creates two files rather one:
data.dir data.pag
Why is that?

Answer: Why does dbmopen create two files?
contributed by merlyn

That's either ODBM or NDBM. GDBM introduced the idea of a single .db file rather than the pair of files used by DBMs since the early 1980s.

Answer: Why does dbmopen create two files?
contributed by belg4mit

One contains the actual data ("page") table, the other is an index ("directory").

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