Microsoft KB Archive/141796

= How To Identify the Jet Database Engine Components =

Article ID: 141796

Article Last Modified on 8/5/2004

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APPLIES TO


 * Microsoft Visual Basic 5.0 Learning Edition
 * Microsoft Visual Basic 6.0 Learning Edition
 * Microsoft Visual Basic 5.0 Professional Edition
 * Microsoft Visual Basic 6.0 Professional Edition
 * Microsoft Visual Basic 5.0 Enterprise Edition
 * Microsoft Visual Basic 6.0 Enterprise Edition
 * Microsoft Visual Basic 4.0 Standard Edition
 * Microsoft Visual Basic 4.0 Professional Edition
 * Microsoft Visual Basic 4.0 Professional Edition
 * Microsoft Visual Basic 4.0 16-bit Enterprise Edition
 * Microsoft Visual Basic 4.0 32-Bit Enterprise Edition

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This article was previously published under Q141796



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)

Accsvc.exe (Microsoft Access Service Pack)

For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to Obtain Microsoft Support Files from Online Services

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