EECS 1520 Lecture Notes - Lecture 15: Root Directory, Filename Extension, Working Directory

• School: York University
• Department: Electrical Engineering and Computer Science
• Course: EECS 1520
• Professor: Paul Kashiyama

Document Summary

Stored and maintained over long periods of time (data longevity) Easily accessed by a user or a group of users (ease of use) Accessed only by users with permission (security) Accurate and consistent over its entire life cycle, and particularly in the case of system crashes and failures (data integrity) Can be plain text or other binary data, such as images, music, videos or even executable programs. File stores data to be used with a specific application (program) such as excel or word. Suffix at the end of a filename e. g. assignment. docx. Describes the filetype or kind of data contained in the file. Operating system associates file extensions with the program (application) meant to open the file. Note: a file extension does not guarantee that the contents of a file conform to that type. Changing the file extension does not change the file format. Often depicted graphically in the os (operating system) as a file folder.