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- Newsgroups: comp.sys.mac.databases
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- From: pejacoby@mmm.serc.3m.com (Paul E. Jacoby)
- Subject: Re: 4D 2.2.3 multi-user
- Message-ID: <1992Nov9.141535.7761@mmm.serc.3m.com>
- Organization: 3M Company
- References: <1992Nov07.010408.95067@bmug.org>
- Date: Mon, 9 Nov 92 14:15:35 GMT
- Lines: 40
-
- In article <1992Nov07.010408.95067@bmug.org> Robert_S._Fukuda@bmug.org writes:
- >[4D 2.2.3 single-user app in multi-user]
-
- >1. Will the application run using system 7's file sharing capabilities? Does a
- >mac have to essentially become a file server for 4D to work or can the mac
- >which has the application run the application simultaneously with another user
- >on the network?
-
- You can run with the database file on another machine using System 7's
- FileSharing. Works basically the same as having a dedicated AppleShare
- fileserver (with the inherent user-limits built into FileSharing).
-
- >2. How much of a performance drop will occur using the network? How much of a
- >difference would using ethernet make?
-
- You will probably be suprised at how much things slow down. It can be
- pretty horrid. If you end up changing any code, it will probably be to
- improve performance! Ethernet helps some, but the 4D Server is really
- going to be the most help.
-
- >3. Will I have to re-write sections of code to make things work in multi-user?
-
- No, not specifically. You may need to tweak heavily for performance
- enhancements, and may find yourself changing code which uses automatic
- relations as a result. You also might want to take a look at any code
- you have which deletes records or updates items like a sequence number.
- These are places that the LOCKED() command can come in handy. Take a
- wander through the language guide, paying attention to the multi-user
- notes found on commands which behave differently in multi-user mode.
-
- >4. Any other problems that you can tell me about?
-
- Just performance...it is loads of fun working around the inherent
- slowness of a fileserver database running over LocalTalk :-)
-
- --
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