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- From: munck@stars.reston.unisys.com (Robert G. Munck)
- Newsgroups: comp.software-eng
- Subject: Re: Do you use SADT ?
- Keywords: SADT
- Message-ID: <1701@aviary.Stars.Reston.Unisys.COM>
- Date: 14 Aug 92 17:06:57 GMT
- References: <1992Aug12.082545.1015@cbfsb.cb.att.com> <1698@aviary.Stars.Reston.Unisys.COM> <1992Aug14.032041.16032@m.cs.uiuc.edu>
- Sender: news@Stars.Reston.Unisys.COM
- Reply-To: munck@stars.reston.unisys.com
- Organization: DARPA STARS/NATO PCIS
- Lines: 45
-
- In article <1992Aug14.032041.16032@m.cs.uiuc.edu>, johnson@m.cs.uiuc.edu (Ralph Johnson) writes:
- > A decade or so ago I spent several months trying to figure out SADT,
- > and decided that the documents that were supposed to describe it didn't.
- > Where does one go to learn it?
-
- SofTech kept SADT proprietary for many years, possibly to its overall
- detriment, but they were a small company and needed to recoup as much
- of their investment as possible. They have now stated, though I don't
- know if this is in any sense "official," that SADT is in the public
- domain.
-
- I assume that the documents you're refering to were not the SofTech
- Author's Guide or Author's Course, but rather the published papers.
- Most of them were written by the Father of SADT, Doug Ross. While he
- is definitely a genius of the first water, Doug's writings are sometimes
- a tad difficult to follow. There is now an SADT textbook:
-
- SADT: Structured Analysis and Design Technique,
- David A. Marca (DEC) and Clement L. McGowan (MITRE),
- 402 pages
- ISBN 0-07-040235-3
- QA76.9.S84M36 1987
- Copyright 1988 by McGraw-Hill, Inc.
-
- that is extremely clear and understandable. There are also a number
- of vendors who offer courses, some better than others, and tools
- for drawing SADT diagrams and doing projects.
-
-
- > Also, if it is so wonderful, why don't more people use it?
-
- They are beginning to.
-
- Doing SADT is in many ways similar to writing technical specifications.
- As with writing English, everyone thinks they can do it but only a few
- are capable of doing it well. Also, some of the vendor's courses teach
- only the "grammar" of the SADT diagram, omitting the extensive mechanisms
- for creating good diagrams and improving them. The result is that there
- is a lot of _bad_ SADT done.
-
- Strangly enough, bad SADT is quite often better than no SADT at all, so
- its popularity is growing.
-
- --
- Bob Munck
-