Slide 6.7: Pros and cons of using file systems

Pros and Cons of Using File Systems

Pros of Using File Systems

It is efficient since it does not have the same computing overhead as using a database.
It is flexible because developers can design and implement file structures and file processing methods specific for the problems.

Cons of Using File Systems

It requires the developers to define and implement file structures and file processing methods for each application.
It is unable to span files over several disks.
It is difficult and expensive to change the format of files and the specific files that are used by the programs.
File processing leads to a lack of consistency between files. The classic example is when an employee leaves a company, his name is taken off the payroll system, but his security access is not revoked.
File processing also results in wasted storage.

Summary
In conclusion, files are a useful alternative to databases only where

Using databases can relieve developers’ task of designing file structures for their applications. However, flexibility is the cost. In fact,

a DBMS is, first and foremost, a disk access manager.

For most cases, developers choose to use databases.

Review: File Systems

Result:

What do you get when you cross a dyslexic, an insomniac, and an agnostic?
Someone who lays awake at night wondering if there is a dog.