Operating Systems File Types(2) Sort by fi y le logical structure H structured files H unstructured files G Sort by file physical structure w sequential files H linking files A index files Gao Haichang, Software School, Xidian UniversityOperating Systems Gao Haichang , Software School, Xidian University 9 File Types (2)  Sort by file logical structure  structured files  unstructured files  Sort by file physical structure  sequential files  linking files  index files