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The information in this article applies to:
SUMMARY
Moderate: Requires basic coding, and interoperability skills.
The following article describes how to use Microsoft Access version 2.0 to
work with Btrieve data files, using Btrieve for Windows or Btrieve for
NetWare.
MORE INFORMATION
To enable Microsoft Access version 2.0 to work with Btrieve data files,
make sure the following are true:
- Make sure the Btrieve ISAM files were installed during setup. (These
files are not installed with a Typical setup.) If the Btrieve ISAMs
have been installed, you should see Btrieve in the Data sources box
that appears when you click Import on the File menu. If the files have
not been installed, follow these steps to install them:
a. Run Setup.
b. Click the Add/Remove button.
c. Click to select the ISAM Drivers check box, and click the Change
Option button.
d. Click to select the Btrieve ISAM check box.
- Make sure you have installed the Microsoft Access 2.0 Service Pack. For
complete information about obtaining the service pack, please see the
following article in the Microsoft Knowledge Base:
ARTICLE-ID: Q122927
TITLE : WX1124: Microsoft Access Version 2.0 Service Pack
- Before you import, export, or attach to Btrieve files on your local
hard disk or on a network, make sure you have one of the following
combinations of files on your computer:
For Btrieve Version 5.x use:
File Name Size Location Supplier of file
---------------------------------------------------------------
WBTRCALL.DLL 51K C:\Windows 3rd party
NOVDB.INI Varies " BTI
WIN.INI. Varies " Microsoft Access
BTRV200.DLL 109K C:\Windows\System MS Service Pack
For Btrieve Version 6.10 use:
File Name Size Location Supplier of file
---------------------------------------------------------------
WBTRCALL.DLL 13K C:\Windows BTI
WBTRVRES.DLL 22K " BTI
WBTRLOCL.DLL 51k " BTI
BTRV200.DLL 109K C:\Windows\System MS Svc Pack 2.0
NOVDB.INI varies " BTI.
WIN.INI. varies " Microsoft Access
For Btrieve Version 6.15 use:
File Name Size Location Supplier of file
--------------------------------------------------------------
WBTRCALL.DLL 16K C:\Windows\System BTI
BTRV200.DLL 109K " MS Svc Pack 2.0
WBTRLOCL.DLL 14K/17K C:\Windows\System BTI
WBTRVRES.dll 22K " BTI
WBTR32.EXE BTI
BTI.INI varies " BTI.
WIN.INI. varies " Microsoft Access
NOTE: A new, "all-DLL" version of WBTRCALL.DLL, 38K in size, is now
available with Btrieve for Netware version 6.15. A version, 42k in
size, is dated 6/16/95. While these versions do not require you to
load Brequest, Brequest may still be loaded as it enhances and
stabilizes Btrieve performance.
- Make sure that the WIN.INI, NOVDB.INI (for Btrieve 5.x and 6.10),
and BTI.INI (for Btrieve 6.15) have valid Btrieve sections and settings
as shown below.
Example of NOVDB.INI
--------------------
[Btrieve]
*****************************************
*Windows Btrieve initialization values *
*****************************************
options=/m:64/p:4096/b:16/f:20/l:40/n:12 /t:C:\ACCESS\BTRIEVE.TRN
tasks=10 ;maximum tasks (max=255)
tracefile=c:\btrtrace.out ;create a Btrieve trace file
traceops=0 1 19 20 21 ;specify operations to list in the trace
[brequestDPMI]
*****************************************
* Windows Btrieve interface to BREQUEST *
*****************************************
tasks=10 ;maximum tasks (max=255)
freememory=No ;allocate/free real DOS memory on each operation
local=Yes ;allow access to Client-Only Btrieve DLL
Example of WIN.INI
------------------
If the WIN.INI file contains a [Btrieve] section when you install
Microsoft Access, then it adds a line called Access_Options with
the appropriate settings. If no [Btrieve] section exists, then the
Microsoft Access Setup program adds the section and includes the
required Options line, for example:
[Btrieve]
options=/m:64/p:4096/b:16/f:20/l:40/n:12 /t:C:\WINDOWS\BTRIEVE.TRN
When you import, export or attach Btrieve files, Microsoft Access
checks the [Btrieve] section of the WIN.INI for an Options line that
meets the following criteria:
/m must be > 48
/l must be at least double the /f setting
/p must be 4096
/n must be > 0
/t must point to a valid subdirectory (the file need not exist)
/u is optional and is only used for compressed Btrieve files.
NOTE: You must know the compression ratio of your compressed Btrieve
files in order to use the /u setting to connect to a compressed
Btrieve data file.
Btrieve versions 6.10 and later do not use the Options line in the
WIN.INI, but Microsoft Access requires it.
Example of BTI.INI
------------------
[Btrieve]
Tasks=30
Local=No
Requester=Yes
Thunk=Yes
Verbose=0
Chkparms=No
[Btrieve Client]
Options=/f:20 /h:60 /l:20 /t:15 /m:512 /u:0 Trnfile=C:\WIN95
Desktopicon=No
SharingOnLocalFiles=SingleEngine
SharingOnRemoteFiles=MultiEngine
EnableSharingBias=Yes
Tracefile=
DeleteLockFile=Yes
[Btrieve Requester]
Runtime Server Support=yes
Datalength=4096
BREQUEST only needs to be loaded if you are connecting to a
Client/server-based Btrieve-type installation. If you are using
Microsoft Access on Windows 95, try to get the Wbtrcall 38K version
6.15 which does not use the MS-DOS level Brequester. You will not be
able to load Brequest in the Autoexec.bat on Windows 95 because the
Network drivers will not be loaded; however, you can load Brequest in
the Winstart.bat.
- Make sure you can successfully attach to Btrieve files after you install
and configure your Btrieve DLLs and INI files. Follow these steps to
attach Btrieve files in Microsoft Access:
a. Start Microsoft Access 2.0.
b. Open a Microsoft Access database.
c. On the File menu, click Attach Table.
d. In the Attach dialog box, under Data Source, choose Btrieve.
e. Choose the appropriate file.ddf, preferably located in the same
subdirectory as the data files.
f. Select the table to attach from the list.
You can now work with the attached Btrieve table.
Btrieve is manufactured by Pervasive Software, a vendor independent
of Microsoft; we make no warranty, implied or otherwise, regarding this
product's performance or reliability.
REFERENCES
For more information about Btrieve settings, refer to the ACREADME.HLP file
in the Access subdirectory.
Keywords : IsmBtrv kb3rdparty
Version : 2.0
Platform : WINDOWS
Hardware : x86
Issue type : kbhowto
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