What is the difference between Select and Project Operations

Question

I\'m referring to the basic relational algebra operators here.
As I see it, everything that can be done with project can be done with select.

I don\'t know if

Answer 1

Project is not a statement. It is the capability of the select statement. Select statement has three capabilities. They are selection,projection,join. Selection-it retrieves the rows that are satisfied by the given query. Projection-it chooses the columns that are satisfied by the given query. Join-it joins the two or more tables