Re: CODASYL-like databases

From: -CELKO- <jcelko212_at_earthlink.net>
Date: Tue, 1 Apr 2008 06:20:17 -0700 (PDT)
Message-ID: <79123b5a-9491-496f-8a30-a7abf8c99472_at_8g2000hsu.googlegroups.com>

The last standard for the network model was NDL; I still have a copy of the document. The real problems were (1) They could not be optimized since they had fixed access paths to the data (2) They were procedural and not declarative, so the programmer did all the work. (3) Everyone had a different language instead of a Standard like SQL to use (NDL came too late).

Most oft he business data in the world is still in IMS today. Received on Tue Apr 01 2008 - 15:20:17 CEST

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