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- Newsgroups: comp.sys.mac.databases
- Path: sparky!uunet!sun-barr!ames!news.hawaii.edu!uhunix.uhcc.Hawaii.Edu!bmartin
- From: bmartin@uhunix.uhcc.Hawaii.Edu (Brian Martin)
- Subject: Re: 4th Dimension Info Requested
- Message-ID: <1992Sep7.110614.13360@news.Hawaii.Edu>
- Sender: root@news.Hawaii.Edu (News Service)
- Nntp-Posting-Host: uhunix.uhcc.hawaii.edu
- Organization: University of Hawaii
- References: <BtJDus.CEv@news.larc.nasa.gov>
- Date: Mon, 7 Sep 1992 11:06:14 GMT
- Lines: 38
-
- In article <BtJDus.CEv@news.larc.nasa.gov> wjb@cscsun2.larc.nasa.gov (William J. Bene) writes:
- >Is anyone using 4th Dimension in a multiuser environment? Any information on
- >4D would be highly appreciated, but I am specifically looking for info on the
- >limitations of such a set up. Such as how many connections can be made to a
- >single database file, how does mutiple connections or large datasets degrade
- >performance, or any other info that could be useful if considering to use 4D.
- >Thanks in advance.
- >
- >Will
-
- We have several large-scale 4D databases in operation. They required
- extensive tuning to minimize network traffic, and run quite well
- with 25 users logged into the database, and at least five simultaneously
- doing heads-down data entry. Our server is a Quadra 700 with high-speed
- Fujitsu drives; we are running a 10BASE-T ethernet network. Clients range
- from Mac II to IIci. Our tests with the 4D Server show that our
- databases running under 4D Server perform as well as a Sybase server running
- on an HP9000, with a 4D client connected via 4D SQL/Server over TCP/IP.
-
- One of our datafiles has over 1,000,000 records, yet indexed lookups
- take about a second over the ethernet network.
-
- The development of this kind of system requires the services of a professional
- 4D developer, a person who has proven experience implementing successful
- multi-user databases, and a solid grounding in the theory of operation
- of relational database management systems.
-
- Best regards,
-
- Brian K. Martin, M.D.
- Martin Information Systems, Ltd.
- 1103 9th Avenue, Suite 203
- Honolulu, Hawai`i 96816-2403 USA
- Voice (808) 733-2003
- Fax (808) 733-2011
-
- INTERNET: bmartin@uhunix.uhcc.hawaii.edu
- CompuServe: 76535,250
-