We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is Data Independence?

Malcolm Tatum
By
Updated May 16, 2024
Our promise to you
EasyTechJunkie is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At EasyTechJunkie, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Data independence is a form of database management that keeps data separated from all programs that make use of it. As a cornerstone for the idea of a DBMS or database management system, this independence ensures that the data cannot be redefined or reorganized by any of the programs that make use of it. In this manner, the data remains accessible, but it is also stable and cannot be corrupted by the applications.

Within the environment of a centralized DBMS, database management relies on the process of data independence. While data transparency still exists as far as the ability of different applications to access and use the data for completing tasks, no program or application can read and then begin to make changes to the data itself. The consistency of the information makes the overall process of maintaining and managing a single database or multiple databases within a single environment much easier.

This concept is different from another approach referred to as data dependence. With this approach, the data used to run an application is actually represented in the source code for the program. The ability of the data to be modified by the program, and vice versa, means that the information is not considered constant and may be changed either by initiating the change through modifications to the source code or through using the program in other ways to adapt the core data.

One of the functions of data independence is to restrict access to the storage structure of the data by the user applications. By effectively hiding the specifics of the structure from the applications, the potential for any one application to alter the nature of the data becomes impossible. As a result, the essential data retains its integrity and remains consistent no matter how many databases or database applications access it.

There are two basic levels or types of independence when it comes to data. Logical data independence makes it possible to change the structure of the data independently of modifying the applications or programs that make use of the data. There is no need to rewrite current applications as part of the process of adding to or removing data from then system.

The second type or level is known as physical data independence. This approach has to do with altering the organization or storage procedures related to the data, rather than modifying the data itself. Accomplishing this shift in file organization or the indexing strategy used for the data does not require any modification to the external structure of the applications, meaning that users of the applications are not likely to notice any difference at all in the function of their programs.

EasyTechJunkie is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Malcolm Tatum
By Malcolm Tatum
Malcolm Tatum, a former teleconferencing industry professional, followed his passion for trivia, research, and writing to become a full-time freelance writer. He has contributed articles to a variety of print and online publications, including EasyTechJunkie, and his work has also been featured in poetry collections, devotional anthologies, and newspapers. When not writing, Malcolm enjoys collecting vinyl records, following minor league baseball, and cycling.
Discussion Comments
By aarons — On Jan 26, 2011

I am familiar with the concept of independence in relation to a party performing a service such as an audit should be independent. I had never really thought about data independence or data independence dbms. I guess according to what anon70198 said, this is not a new concept. I am surprised it was not covered more in college.

By anon70198 — On Mar 12, 2010

The concept of data independence emerged from research in by D.L. Childs that was later cited by Codd in his 1970 paper about the about the relational model.

"Sets, Data Models and Data Independence" explains this (posted on the Dr. Dobb's web site).

Malcolm Tatum
Malcolm Tatum
Malcolm Tatum, a former teleconferencing industry professional, followed his passion for trivia, research, and writing...
Learn more
EasyTechJunkie, in your inbox

Our latest articles, guides, and more, delivered daily.

EasyTechJunkie, in your inbox

Our latest articles, guides, and more, delivered daily.