ALERT

[FREE DEMO] Deploy Your Enterprise Cloud in Minutes

Create, Retrieve, Update and Delete (CRUD)

Definition - What does Create, Retrieve, Update and Delete (CRUD) mean?

Create, retrieve, update and delete (CRUD) refers to the four major functions implemented in database applications.

The CRUD functions are the user interfaces to databases, as they permit users to create, view, modify and alter data. CRUD works on entities in databases and manipulates these entities. Any simple database table enforces CRUD constraints.

Techopedia explains Create, Retrieve, Update and Delete (CRUD)

For instance, a simple student database table adds (creates) new student details, accesses (reads) existing student details, modifies (updates) existing student data such as subjects, and deletes student details when students leave the school.

The commands corresponding to these operations in SQL are INSERT, SELECT, UPDATE and DELETE. INSERT adds new records, SELECT retrieves or selects existing records based on selection conditions, UPDATE modifies existing records and DELETE removes tables or records.

The most efficient way to accomplish CRUD in SQL is through stored procedures, which are automated and controlled by the person managing the procedure generation process. The individual SQL commands INSERT, SELECT, UPDATE and DELETE can be executed by a single statement that calls the stored procedure.

Techopedia Deals

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
The 4th Era of IT Infrastructure: Superconverged Systems
The 4th Era of IT Infrastructure: Superconverged Systems:
Learn the benefits and limitations of the 3 generations of IT infrastructure – siloed, converged and hyperconverged – and discover how the 4th...
Approaches and Benefits of Network Virtualization
Approaches and Benefits of Network Virtualization:
Businesses today aspire to achieve a software-defined datacenter (SDDC) to enhance business agility and reduce operational complexity. However, the...
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.