query on a totally ordered set

[taraa]

What's the difference between 'query and 'question', please?

A query on a totally ordered set S that returns a pointer to the element of S with the smallest key.
Introduction to algorithms, cormen

 

[USMeg]

A query in data processing is a data request.
Run a query that returns all customers with an order in the current week.

 

[taraa]

A query in data processing is a data request.
Run a query that returns all customers with an order in the current week.

Aha, many thanks.
But a question maybe something that changes the data, please, but query can't?

 

[USMeg]

In SQL, the following is a query:
SELECT * FROM Customers WHERE MAX (order_date) > '20210724'
Weirdly, a query that updates is still a query (It's an 'update query'.)
I don't ever "question" data.

 

[taraa]

In SQL, the following is a query:
SELECT * FROM Customers WHERE MAX (order_date) > '20210724'
Weirdly, a query that updates is still a query (It's an 'update query'.)
I don't ever "question" data.

Many thanks.