Q141796: HOWTO: Identify the Jet Database Engine Components
Article: Q141796
Product(s): Microsoft Visual Basic for Windows
Version(s): 4.0,5.0,6.0
Operating System(s):
Keyword(s): kbfile kbJET kbMFC kbVBp400 kbVBp500 kbVBp600
Last Modified: 13-JUL-2001
-------------------------------------------------------------------------------
The information in this article applies to:
- Microsoft Visual Basic Learning Edition for Windows, versions 5.0, 6.0
- Microsoft Visual Basic Professional Edition for Windows, versions 5.0, 6.0
- Microsoft Visual Basic Enterprise Edition for Windows, versions 5.0, 6.0
- Microsoft Visual Basic Standard Edition, 32-bit, for Windows, version 4.0
- Microsoft Visual Basic Professional Edition, 16-bit, for Windows, version 4.0
- Microsoft Visual Basic Professional Edition, 32-bit, for Windows, version 4.0
- Microsoft Visual Basic Enterprise Edition, 16-bit, for Windows, version 4.0
- Microsoft Visual Basic Enterprise Edition, 32-bit, for Windows, version 4.0
-------------------------------------------------------------------------------
SUMMARY
=======
Jet is the default database engine for Visual Basic as well as other Microsoft
applications such as Microsoft Access, Microsoft Excel, Project, and Microsoft
Foundation Classes (MFC). Which version of Jet you are using can be unclear
because Visual Basic and other applications using Jet are continually being
updated. The tables and explanations in this article are intended to help you
identify the version and components of Jet that you are using for the given
application.
MORE INFORMATION
================
The list below displays which version of Jet is shipped with each of the
following products:
Application Microsoft JET version
----------------------------------------------------
Microsoft Access 1.0 1.0
Microsoft Access 1.1 1.1
Microsoft Access 2.0 2.0
Microsoft Access 2.0 2.5 with Microsoft Access Service Pack
Microsoft Access 7.0 3.0
Microsoft Access 97 3.5
Visual Basic 3.0 1.1
Visual Basic 3.0 2.0 with Visual Basic Compatibility Layer
Visual Basic 3.0 2.5 with Microsoft Access Service Pack
Visual Basic 4.0 16-bit 2.5
Visual Basic 4.0 32-bit 3.0
Visual Basic 5.0 32-bit 3.5
Microsoft Excel 7.0 3.0
Microsoft Excel 97 3.5
Microsoft Project 2.0
Microsoft Foundation Classes 3.0
Compatibility Among Versions
----------------------------
With each new version of Microsoft Jet, enhancements in functionality and changes
to the structure of the database file cause problems with backward
compatibility. Wherever possible, efforts have been made to ensure an easy
migration path among versions. However, incompatibilities do exist. The
following table illustrates how database files and objects can be used among
different versions of Microsoft Jet.
Jet Version
1.0 1.1 2.0 2.5 3.0 3.5 3.51
-----------------------------------------------------------------
MDB Version 1.0 Y Y Y Y Y Y Y
1.1 N Y Y Y Y Y Y
2.0 N N Y Y Y Y Y
2.5 N N N Y Y Y Y
3.0 N N N N Y Y Y
3.5 N N N N N Y Y
3.51 N N N N N N Y
A "Y" indicates that the database can be used without conversion; "N" indicates
that the database cannot be used or converted. With DAO code you can open any
version of any database up to the same version of Microsoft Jet. However,
Microsoft Access can open only those databases with the same version as itself,
but it can link to tables with the same or earlier version. In other words, if
you upgrade to Microsoft Jet 3.0, you will still be able to read version 2.x
databases.
Notice that Visual Basic 3.0 is capable of using three different versions of Jet
each requiring a separate set of dynamic link libraries (.dlls). This can cause
problems when your Visual Basic application expects to use Jet 2.0 for example,
and then another Visual Basic application using an earlier version of Jet gets
installed on the same system replacing some of the version 2.0 .dlls with
version 1.1. Typically the problem .dll in this situation is VBDB300.DLL because
it determines which version of the Jet engine will be used.
The following table should help you solve any version conflicts and help you
identify the version of Jet you are using. You may use the Wps.exe utility
shipped with Visual Basic to find out which version of Jet you currently have
loaded in memory. Wps.exe is located in the \VB\CDK directory of Visual Basic
3.0 Professional, and in \TOOLS\PSS directory of the Visual Basic 4.0 CD. Pay
special attention to the version information obtained from File Manager (File,
Properties) in Visual Basic 3.0, and Microsoft System Info. in Visual Basic 4.0
32-bit.
The following files are required by Visual Basic to use the Jet Database Engine:
Jet Version File Version Description
--------------------------------------------------------------
1.1 VBDB300.DLL 3.00.0528 VB/JET support
MSAES110.DLL 1.10.0000 Expression services
MSAJT110.DLL 1.10.0001 Jet 1.1 engine
XBS110.DLL 1.10.0002 External xBASE ISAM
BTRV110.DLL 1.10.0000 External Btrieve ISAM
PDX110.DLL 1.10.0000 External Paradox ISAM
2.0 (comlyr) VBDB300.DLL 3.00.0529 VB/JET support
MSAJT112.DLL 1.99.1605 Jet 2.x comp. loader
MSAJT200.DLL 2.00.0000 Jet 2.0 engine
XBS200.DLL 2.00.0000 External xBASE ISAM
BTRV200.DLL 2.00.0000 External Btrieve ISAM
PDX200.DLL 2.00.0000 External Paradox ISAM
2.5 (accsvc) VBDB300.DLL 3.00.0529 VB/JET support
MSAJT112.DLL 1.99.1605 Jet 2.x comp loader
MSAJT200.DLL 2.50.1606 Jet 2.5 engine
MSJETERR.DLL 2.50.1108 Error services
MSJETINT.DLL 2.50.1108 International
XBS200.DLL 2.50.1108 External xBASE ISAM
BTRV200.DLL 2.50.1108 External Btrieve ISAM
PDX200.DLL 2.50.1108 External Paradox ISAM
2.5 (VB4 16) VBDB16.DLL 4.00.2422 VB/JET support
MSAJT200.DLL 2.50.1606 Jet 2.5 engine
MSJETERR.DLL 2.50.1111 Error services
MSJETINT.DLL 2.50.1111 International
XBS200.DLL 2.50.1117 External xBASE ISAM
BTRV200.DLL 2.50.1117 External Btrieve ISAM
PDX200.DLL 2.50.1117 External Paradox ISAM
MSXL2016.DLL 2.50.1117 External Excel ISAM
MSTX2016.DLL 2.50.1117 External Text ISAM
3.0 MSJT3032.DLL 3.0.0.2118 Jet 3.0 engine
MSJINT32.DLL 3.0.0.2118 International
MSJTER32.DLL 3.0.0.2118 Error services
MSXL3032.DLL 3.0.0.2001 External Excel ISAM
MSRD2X32.DLL 3.0.0.2118 External Jet 2.0 ISAM
MSLT3032.DLL 3.0.0.2008 External Lotus ISAM
MSPX3032.DLL 3.0.0.2001 External Paradox ISAM
MSXB3032.DLL 3.0.0.2008 External xBASE ISAM
MSTX3032.DLL 3.0.0.2008 External Text ISAM
3.5 MSJET35.DLL 3.50.3602.4 Jet 3.5 engine
MSJTER35.DLL 3.50.3602.0 Error service
MSJINT35.DLL 3.50.3602.5 International
MSXBSE35.DLL 3.50.3428.0 External xBASE ISAM
MSEXCL35.DLL 3.50.3428.0 External Excel ISAM
MSTEXT35.DLL 3.50.3428.0 External Text ISAM
MSRD2X35.DLL 3.50.3602.0 External Jet 2.x ISAM
MSPDOX35.DLL 3.50.3428.0 External Paradox ISAM
MSLTUS35.DLL 3.50.3428.0 External Lotus ISAM
3.51 (SR-1) MSJET35.DLL 3.51.0623.4 Jet 3.51 engine
MSJTER35.DLL 3.51.0623.0 Error service
MSJINT35.DLL 3.51.0623.0 International
MSXBSE35.DLL 3.50.3907.0 External xBASE ISAM
MSEXCL35.DLL 3.50.3907.0 External Excel ISAM
MSTEXT35.DLL 3.50.3907.0 External Text ISAM
MSRD2X35.DLL 3.50.3907.0 External Jet 2.x ISAM
MSPDOX35.DLL 3.50.3907.0 External Paradox ISAM
MSLTUS35.DLL 3.50.3907.0 External Lotus ISAM
The following files are available for download from the Microsoft Download
Center:
Comlyr.exe (Visual Basic Compatibility Layer)
(http://download.microsoft.com/download/access20/doc/1/WIN98/EN-US/Comlyr.exe)
Accsvc.exe (Microsoft Access Service Pack)
(http://download.microsoft.com/download/access20/SP/1/WIN98/EN-US/Accsvc.exe)
For additional information about how to download Microsoft Support files, click
the article number below to view the article in the Microsoft Knowledge Base:
Q119591 How to Obtain Microsoft Support Files from Online Services
Microsoft used the most current virus detection software available on the date of
posting to scan this file for viruses. Once posted, the file is housed on secure
servers that prevent any unauthorized changes to the file.
REFERENCES
==========
Microsoft Jet Database Engine Programmer's Guide, by Dan Haught and Jim
Ferguson, Microsoft Press 1995 For additional information, please click the
article numbers below to view the articles in the Microsoft Knowledge Base:
Q113683 FILE: Fact Sheet on Jet 2.0/VB 3.0 Compatibility Layer
Q122927 WX1124: Microsoft Access Version 2.0 Service Pack
Q172733 Updated Version of Microsoft Jet 3.5 Available on MSL
Additional query words: Comlyr Accsvc
======================================================================
Keywords : kbfile kbJET kbMFC kbVBp400 kbVBp500 kbVBp600
Technology : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB500Search kbVB600Search kbVB500 kbVB600 kbVB400Search kbVB400 kbVB16bitSearch
Version : :4.0,5.0,6.0
Issue type : kbhowto
=============================================================================
THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.
Copyright Microsoft Corporation 1986-2002.