CQRS is deciphered as Command and Query Responsibility Segregation. It is an architectural design pattern which states that we must separate the operations for reading the data from the operations for writing or updating the data.
CQRS is not a pattern that encompasses the whole application. It is a concept that builds on Domain-Driven Design (DDD).
An important strategic concept of DDD is the so-called Bounded Context. In a typical application, there are multiple bounded contexts, any of which can be implemented the way it makes sense.
Queries are a key element used for reading data. How are they helpful in the implementation process of CQRS?
Here are some tips: