The types of files from usage point of view are as follows:

Master file: Master files are used to store the information that remains constant for a long period of time. For example, the address file for all students enrolled in a college is a master file. It may contain the fields like name, address, phone and email etc.

The master files are the files which are latest updated files. These files are updated when any change in their contents are required. These files are never empty since they are created.

File-Types-from-Usage-Point-of-View
Transaction File: A type of file that is used to store input data before processing is called transaction file. It may be temporary file and may exist until the master file is updated. It may also be used to maintain a permanent record of the data about a transaction.

Backup file: A type of file that is used to take backup of important data is called backup file. It is a permanent file. It is used to store an additional copy of data. The data can be recovered from this file if the original file is lost or damaged. Backup files are mostly created by using specific software utilities.

Describe the file types from functional point of view.

The files are given proper names from functional point of view. It consists of file name and file extension. The name and extension of a file is separated by dot. The extension is normally assigned by the software in which the file is created.

File types from functional point of view.

The types of files from functional point of view are as follows:

Program file: A type of file that contains the software instruction is called program file. The source program files and executable files are examples of program files. The source program file may have an extensions of .com. the executable files may have an extension of .exe.

Data File: A type of file that contains data is called data file. Data file are created by the software being used some examples of data files and software in which these files are created are as follows:

Software

File type

File extension

Notepad Text file .txt
Word processor Document .doc, .rtf, .docx
Spreadsheet Worksheet .xls, .wks
Database Data file .dat, .dbf, .mdb
Image processor Image file .tif, .jpg, .eps, .gif, .bmp
Audio software Audio file .wav, .mid
Video software Video file .avi, .mpg, .mp4