.MAF File Extension

There are 2 file types use the .MAF file extension:

  1. Microsoft Access Form
  2. Mutation Annotation Format File

1. Microsoft Access Form

Microsoft Access Form

An MAF file is a form created by Microsoft Access, a relational database management system (RDBMS). It contains formatted fields used to enter data into or retrieve data from an .ACCDB database. MAF files are created using Microsoft Access's Form tool.

To allow database managers to more easily enter data into or retrieve data from a Microsoft Access database, the program allows managers to create and link forms with database tables. To create a form, managers select the table for which they want to create a form, select Create from Microsoft Access's menu bar, and then select Form. Access then creates a form that contains fields linked to the table's columns.

Each Microsoft Access form is saved as an MAF file. You can open an MAF file in Microsoft Access to edit the form's fields and appearance, using Access's Form Layout Tools. You can also use a form to search for or enter data into a database, provided you have access to that database.

Forms may include subforms, which show information from related tables. For example, a form used to search for or add customers to a database may include a subform that shows information about customers' orders, which is stored in a related table.

How do I set a Microsoft Access form (MAF file) as a database's default form?

After you finish creating a Microsoft Access form, you may want to set that form as your database's default form. This will cause the form to appear automatically each time you open the database. To set a form as a database's default form:

  1. Select File → Options.
  2. Select Current Database.
  3. From the Display Form list, select the form you want to use as your database's default form.
  4. Select OK.

You can open an MAF file in Microsoft Access (Windows). To do so, select File → Open... from the program's menu bar, and then navigate to and open your MAF file.

You can then use the form to enter data into or retrieve data from the table it is linked with, or you can edit the form using Microsoft Access's Form Design Tools. To access Access's Form Design Tools, select the View button found in Access's toolbar, and then select Layout view or Design view.

Software's name License Platforms
Microsoft Access Microsoft Access Commercial Windows

Updated: May 25, 2021

2. Mutation Annotation Format File

Mutation Annotation Format File
  • Developer National Cancer Institute
  • Popularity
    3.0 (3 votes)
  • Category Data Files
  • Format Text

Text file created in the Mutation Annotation Format (MAF), a file format used to capture mutations in cells; saves cell and genome information using tab-delimited text; used in cancer studies for capturing somatic mutations and single-nucleotide polymorphism (SNPs).

The MAF format is maintained by the National Cancer Institute and the National Human Genome Research Institute (NHGRI) under a project named The Cancer Genome Atlas (TCGA). The format is primarily used by custom research analysis software applications. However, MAF files can be viewed with any text editor.

NOTE: The MAF format has undergone several revisions. Version 2.2 supports 32 different tab-delimited columns.

Software's name License Platforms
Microsoft Notepad Microsoft Notepad Bundled MacWindows
Microsoft WordPad Microsoft WordPad Bundled Windows
Other text editor Other text editor LinuxMacWindows

Updated: November 29, 2010

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