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File Organization

In: Computers and Technology

Submitted By Arthur10003
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FILE ORGANIZATION

INTRODUCTION:
Before going into file organization it is necessary to go into little details of files generally. A file is a collection of related information defined by its creator. File is the basic unit of storage that enables a computer to distinguish one set of information from another. The most important files are program and data files. Program files are associated with providing access and execution of an actual program that is stored and installed on your computer system, whereas data files contain data and information needed for a program to perform execution successfully. The most important feature of a file is its name.

Having said this, a trade-off between file and its organization exists. Therefore a file must be organized in order to increase confidence in reading and understanding files.

FILE ORGANIZATION
File organization is a way of organizing the data or records in a file. It does not refer to how files are organized in folders, but how the contents of files are added and accessed. It also refers to the structure of a file (especially a data file) defined in terms of its components and how they are mapped onto backing store. For example, if we want to retrieve student records in alphabetical order of name, sorting the file by student name is a good file organization. However, if we want to retrieve all students whose marks is in a certain range, a file ordered by student name would not be a good file organization. Some file organizations are efficient for bulk loading data into the database but inefficient for retrieve and other activities.
Types of file organization
In order to make effective selection of file organizations and indexes, here we present in details different types of file Organization. These are:
• Heap File Organization
• Hash File Organization
• Indexed Sequential Access Methods…...

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