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Questions in job interviews for a developer role

I recently had a few job interviews for a developer role and because the same questions will repeat over and over again, I decided to use this post as a heads up dictionary for me and also for you to prepare for such interviews. I post all questions here in a unsorted way for now and will edit this post in the future as soon as I had new interviews.

What is a Rest API

Representational state transfer is a software architectural style that was created to guide the design and development of the architecture for the World Wide Web. REST defines a set of constraints for how the architecture of an Internet-scale distributed hypermedia system, such as the Web, should behave. wikipedia.org

What is JavaScript Object Notation

JSON is an open standard file format and data interchange format that uses human-readable text to store and transmit data objects consisting of attribute–value pairs and arrays. It is a very common data format, with a diverse range of applications, one example being web applications that communicate with a server.

Explain Serialization / Deserialization

Serialization is the process of converting an object into a stream of bytes to store the object or transmit it to memory, a database, or a file. Its main purpose is to save the state of an object in order to be able to recreate it when needed. The reverse process is called deserialization

What is a JOIN in SQL

A join is an SQL operation performed to establish a connection between two or more database tables based on matching columns, thereby creating a relationship between the tables. Most complex queries in an SQL database management system involve join commands. There are different types of joins.

October 29, 2021 by scobiform

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