CIS2110
Files and Storage
Types of Files
There are many types of files used in computers. Some are for storing data, some for providing instructions to the computer, some for keeping data safe among others.Here is a listing of some of the types of files that exist. Here is another listing.
Files are a part of a hierarchy in a database system. According to Laudon and Laudon
A computer system organizes data in a hierarchy that starts with bits and bytes and progresses to fields, records, files, and databases. A bit represents the smallest unit of data a computer can handle. A group of bits, called a byte, represents a single character, which can be a letter, a number, or another symbol. A grouping of characters into a word, a group of words, or a complete number, such as a person ’s name or age, is called a field. A group of related fields, such as the student ’s name, the course taken, the date, and the grade, comprises a record; a group of records of the same type is called a file.
Storing and Retrieving Files
How are files stored and retrieved?
Computer files are created by bits and bytes being coded in some manner using some system such as ASCII or EBCIDIC. ASCII and ECBDIC represent the most common encoding schemes. ASCII is the standard scheme for almost all computers except IBM mainframes. The problem of sharing files has to be met by the storage standards. In order to use files from one computer to another requires the use of a standard. In all computers this is handled by the file manager. The file manager is among the set of programs found in the operating system of a computer. The file manager opens files, closes them, copies them, deletes them locates them on the computer, reads and writes them.
File Management
File management is controlled by a subset of the files in the operating system. File management includes the following functions: copying, deleting, read on here...
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Storage Media
There is a difference between storage devices and storage media. Storage refers to the act of holding data or information. Storage devices are the technology that make it possible to hold the data, commands and information. refers to the platform on which it is held. That is, it refers to the physical component itself, onto which data is recorded. Magnetic tape, optical discs, floppy disks, flash drives, among others are all storage media. Others include, HD DVD disks, Blu-Ray Discs (BDs), smart cards.
Storage Technology
What is storage technology?
Storage Technology refers to the technology used to store the images or information obtained through the use of some form of Capture Technology...continue here