When working with FileMaker, the External Data Source (EDS) feature is crucial for accessing and integrating data across multiple files. However, an often-overlooked issue can cause significant headaches: the presence of periods in your file names. In this article, we'll explore this issue in depth and provide a simple solution to ensure your EDS resolves correctly.

The Problem with Periods in File Names

FileMaker EDS is designed to link to other FileMaker files, allowing seamless data integration. However, if the file name contains a period (.), the EDS will fail to resolve. For example, a file named Receipt1.02.fmp12 will result in an error, making it impossible to link or access the data within that file through EDS.

Why Periods Cause Issues

FileMaker's EDS relies on precise file path references. The period in the file name can confuse the path resolution process, as periods are typically used to denote file extensions. Consequently, FileMaker may misinterpret the file name, leading to an error.

The Simple Solution: Renaming Files

The good news is that this issue has a straightforward fix. By renaming your files to avoid periods, you can ensure that FileMaker's EDS functions as intended. For instance, renaming Receipt1.02.fmp12 to Receipt1_02.fmp12 resolves the issue entirely.

Steps to Rename Your Files

Identify Affected Files: Locate any FileMaker files with periods in their names.
Rename Files: Change the periods to underscores or remove them altogether. For example, Receipt1.02.fmp12 becomes Receipt1_02.fmp12.
Update File References: Ensure that any references to the old file name in your EDS settings are updated to the new file name.

Best Practices for File Naming in FileMaker To avoid similar issues in the future, it's essential to follow best practices for naming your FileMaker files:

Avoid Special Characters: Stick to alphanumeric characters and underscores.
Consistent Naming Conventions: Develop a clear naming convention for your files that everyone on your team follows.
Regular Audits: Periodically review your file names to ensure compliance with your naming conventions.

Conclusion

FileMaker's External Data Source is a powerful feature that enables data integration across multiple files. However, file naming conventions play a critical role in its functionality. By avoiding periods in file names and adhering to best practices, you can prevent errors and ensure smooth operation.

For more tips and insights on FileMaker, stay tuned to our blog. If you have any questions or need assistance with your FileMaker setup, feel free to contact us.