Which software architecture to choose?

Question

Software design

It is necessary to design and develop a program, like an information system. Essence on the PC clients will be installed on the SQL server the base will be spinning. Question: if the program will access the SQL server using SQL queries, then what software architecture will it be?
What is better and easier, in terms of implementation, to choose a two-tier or three-tier architecture?

Answer 1

Question: if the program will access the SQL server using SQL queries, then what software architecture will it be?

It will be a client-server architecture.

What is better and easier, in terms of implementation, to choose a two-tier or three-tier architecture?

It is better to take a three-tier one (with a database, a server, and a client) - it is safer and easier to maintain.
More code needs to be written.
The client can be easily made as a web application - I think it's easier than working with a desktop.