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READ.ME
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1993-02-14
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NETWORK OPERATION SUPPLEMENT FOR SHAREWARE RELEASE OF CASEM 1.1
This file provides necessary information for the proper installation
and unlimited use of CASEM 1.1 on a single Novell NetWare 3.11
local area network server. Use of CASEM on other networks may be
possible, but is not supported. Written instructions on the actual
operation of CASEM are enclosed with registered copies of the
program; these instructions only cover network related instructions.
To register for unlimited use of CASEM on a single server,
send $49.95 to:
Alan Frayer
6023 26th Street West #183
Bradenton, FL 34207
Be sure to indicate which version of CASEM you are registering.
---------------------------------------------------------------------
INSTALLATION
For proper network security, CASEM.EXE should be installed to its own
directory on your file server. This directory should be READ ONLY, to
protect the program from accidental deletion.
CASEM still creates its files in the directory from which it executes.
For this reason, you should create a shared directory separate from
the program directory, then execute CASEM from that directory. This
can be done by mapping a search directory to the CASEM program, then
changing to the data directory and starting the program. For example:
MAP INS S3:=L:\CASEM
CD\CASEMDATA
CASEM
You will probably want to remove the search directory mapping when
you finish using CASEM:
MAP DEL S3:
The above commands can be included in a batch file, if desired.
---------------------------------------------------------------------
UNDERSTANDING CASEM ON THE NETWORK
CASEM allows multiple users to access the same record simultaneously.
To maintain an accurate file of cases, you should understand how
CASEM manages multiple-user access.
CASEM doesn't keep the case file open while a record is accessed.
Instead, the record is read into memory and the file is closed. When
changes are made, the changes are just as quickly added to the file.
File access is kept to a minimum. By reducing file access, and more
importantly by eliminating record locking, CASEM is not susceptible
to user lockout from a user leaving a record open while going to
lunch.
Further, before CASEM writes changes to a record, the record in memory
is compared to the record in the file. If the record in the file does
not match the record originally collected before changes were made, the
changes are discarded and the user is warned of the changed record.
The following example should make the process clear:
Peggy has a correction to make in the Smith case. She locates the
case in CASEM and opens the record. CASEM reads the Smith record into
memory and closes the file.
Nancy also has a change to make in the Smith case, and locates the
case in CASEM, opening the record. Since CASEM has already read the
record into memory and closed the file, it allows Nancy to open the
file again and read the Smith case into another portion of memory,
closing the file after doing so. This allows a third secretary to
open the Smith record if one desired.
Peggy sees the information originally on file, and makes a change,
then saves the change by exiting the record. Before saving the change,
CASEM compares the copy of the Smith case stored in memory before the
change with the record in the file. The two match, so CASEM writes the
changes to the Smith record in the file.
Nancy sees the same data Peggy saw before changes, since she opened
the case record before Peggy's changes were stored to the file. Nancy
makes her change and exits the record, expecting the change to be made.
CASEM compares the copy of the original case record in memory to the
current file record and sees the current file record has changed. To
prevent losing the earlier change, CASEM tosses out Nancy's change and
sends a message to Nancy, telling her another user has changed the record.
Nancy should now return to the Smith record to view Peggy's change and
decide whether the record needs further editing.
Because CASEM allows multiple users to access the same record, it is
extremely important that users pay attention to messages generated by
CASEM. By doing so, case information can be protected and case
management can be handled more efficiently.