File organization

File organisation refers to the way in which data is stored in a file and the methods by which it can be accessed. Database is stored as a collection of files. Each file is a sequence of records. A record is a sequence of fields. Data is usually stored in the form of records.

Records usually describe entities and their attributes e.g. an employee record represents an employee entity and each field value in the record specifies some attributes of that employee such as Name, Birth_date, salary etc. Organizing a file depends on what kind of file it happens to be.