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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Multiple keys for a map
Date: Tue, 17 Sep 2013 18:52:37 +0200
Organization: cbb software GmbH
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Date: 2013-09-17T18:52:37+02:00
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On Tue, 17 Sep 2013 07:51:24 -0700 (PDT), Peter Brooks wrote:

> I know that maps in Containers.Hashed_Maps and Containers.Ordered_Map are designed as single-key look-up tables.
[...]
> Any suggestions?

It looks like a relational table of three columns.

Maps can be used to index such a table, or red-black trees, or whatever.

You could also take an existing light-weight RDBMS, e.g. SQLite3 or
Berkeley DB. There exist many Ada bindings to SQLite3.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de