CRUD (create, read, update, and delete) are the four basic functions that are implemented in relational database applications
We also use alternate words in defining the four basic functions of CRUD such as retrieve, modify or destroy.
CRUD is also sometimes used to define user interface conventions that provide viewing, searching, and changing information mainly using computer-based forms and reports. The term CRUD operations became popular firstly by James Martin in his 1983 book Managing the Database Environment.
The CRUD acronym can be extended to CRUDL to facilitate listing of large data sets which bring extra complexity such as pagination when the volume of data sets is too huge to be easily held in memory.
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Also, watch this video on CRUD App with Node Js: