.91 — Microsoft Visual FoxPro Database

Microsoft · 1995

Developer

Microsoft

Key Features

Stores structured data for database applications.
Proprietary binary format specific to Visual FoxPro.
Can represent tables, indexes, or other database objects.
Integral to applications built with Microsoft Visual FoxPro.

Best For

Applications developed using Microsoft Visual FoxPro.
Storing relational data within a specific development ecosystem.
Situations requiring robust data management features provided by Visual FoxPro.

Less Ideal For

General data exchange between different applications.
Web-based database solutions.
Modern cloud-native database systems.
Users without access to Visual FoxPro or compatible tools.

Common Use Cases

Storing customer records.
Managing inventory data.
Tracking sales transactions.
Building custom business applications.

How to Open It

Open the .91 file using Microsoft Visual FoxPro.
If it's a table, you can attempt to link or import it into other database systems, though compatibility may be limited.
Use database management tools that specifically support Visual FoxPro databases.
Developer tools capable of parsing Visual FoxPro proprietary formats might be able to read them.

What is a .91 file?

The .91 file extension is associated with Microsoft Visual FoxPro, a data-centric object-oriented programming language and relational database management system. These files typically store database tables, forms, reports, or other application components created within the Visual FoxPro environment. They are designed to be used by Visual FoxPro applications for storing and managing structured data, making them integral to applications built with this development tool. Accessing or modifying these files usually requires the Visual FoxPro development environment or compatible database tools.

Programs That Open .91 Files

Platform	Program
Windows	Microsoft Visual FoxPro	Paid	Official

How to Convert .91 Files

Format	Method
.CSV	Microsoft Visual FoxPro, Database conversion tools
.DBF	Microsoft Visual FoxPro, Database conversion tools

Common Problems with .91 Files

⚠️ Cannot open .91 files without Microsoft Visual FoxPro.

You will need to install Microsoft Visual FoxPro or find a compatible database tool that can import or link to this format.

⚠️ Data corruption or loss when converting.

Always back up your original .91 files before attempting any conversion. Use reputable conversion tools and verify the integrity of the converted data.

Frequently Asked Questions

What is Microsoft Visual FoxPro?▼

Microsoft Visual FoxPro was a popular database management system and object-oriented programming language used for developing data-centric applications.

Is .91 a standard database format?▼

No, .91 is a proprietary format specific to Microsoft Visual FoxPro and is not a widely adopted standard for general database use.

Can I convert .91 files to other formats?▼

Yes, Microsoft Visual FoxPro itself can export data to formats like CSV or DBF, and specialized database conversion tools may also support this.

Technical Details

Files with the .91 extension are proprietary binary files used by Microsoft Visual FoxPro. They store structured data in a tabular format, similar to other database tables, but are optimized for use within the Visual FoxPro environment. The exact internal structure can vary depending on whether it's a data table, index, or another database object.

Did You Know?

Microsoft Visual FoxPro was the last major database product from Microsoft that was not integrated into the .NET Framework.

Despite being retired by Microsoft, Visual FoxPro still has a dedicated user base for maintaining legacy applications.

Security Information

Files associated with proprietary database systems like Visual FoxPro are generally safe from malware if obtained from trusted sources. However, always exercise caution when opening files from unknown or suspicious origins, as with any file type.