ALERT

[WEBINAR] Building a Business-Driven Data Architecture

Read-only

Definition - What does Read-only mean?

Read-only is a designation for any object or construct which can no longer be altered after creation, it can only be read.

This can refer to both hardware and software constructs such as read-only memory chips like BIOS and CMOS and CD/DVD/Blu-ray-ROMs for hardware, and read-only files for software constructs. In either case the contents of the object when marked as read-only can no longer be changed, only accessed or read.

Techopedia explains Read-only

Read-only is a status which indicates that something is unalterable, capable of being read but not written or overwritten.

In software, read-only is a safety measure which protects files and data from accidental or intentional alteration or deletion and may be imposed only for select users or groups of users. This means that some users see the files as read-only while others are allowed to alter or delete it; this is widely used for permissions and security purposes.

The number one benefit of read-only constructs is consistency. Since they cannot be changed or even then can only be changed in certain circumstances and by certain individuals, we can ensure the consistency of the data or the operation of a piece of hardware and less prone to errors due to unexpected changes.

Connect with us

Techopedia on Linkedin
Techopedia on Linkedin
Tweat cdn.techopedia.com
"Techopedia" on Twitter


'@Techopedia'
Sign up for Techopedia's Free Newsletter!

Email Newsletter

Join thousands of others with our weekly newsletter

Resources
Free Whitepaper: The Path to Hybrid Cloud
Free Whitepaper: The Path to Hybrid Cloud:
The Path to Hybrid Cloud: Intelligent Bursting To Amazon Web Services & Microsoft Azure
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.