DATA PROCESSING SSS2 SECOND TERM

WEEK 2

CONCEPT OF COMPUTER FILES

Contents

Computer files: Computer files are the most basic unit of data that users can store on a disk. Every program, image, video, song employee number, a 3-digit, and document is stored as a file

Record: A record is a collection of related data items or fields. Each record normally corresponds to a specific unit of information. For example, employee number, employee’s name, basic salary and house rent allowance.

Field: Data items are physically arranged as fields in a computer file. Their length may be fixed or variable. Since all individuals have 3 digits field is required to store the particular data. Hence, it is a fixed field. In contrast, since the customer’s name varies considerably from one customer to another, a variable amount of space must be available to store this element. This can be called a variable field.

Data.... View More