The relationships between file types and programs are called file associations and that is what lets the computer decide what program opens each file type by default.
1. ↑ file associations. The relationships between file types and programs are called file associations and that is what lets the computer decide what program opens each file type by default. « Back to Glossary Index
2. ↑ file type. The type of file it is. File format is a term that means both the structure and the content. For example, an image file compressed using JPEG compression is simply called a “JPEG Image File”. Often interchangeably used with the term “file format” « Back to Glossary Index