The logical view of a database system refers tohow a user or programmer conceptually organizes and understands the data. how the DBMS accesses data for a certain application program. how and where the data are physically arranged and stored. how master files store data values used by more than one application program.

How a user or programmer conceptually organizes and understands the data.

Explanation:

According too the given question, the logical view is basically refers to the programmers or any user is typically understand the given data and conceptually organize the data in logical manner in the database management system.

which functions return a valid value without any arguments?

(-blank- and -blank- return a valid value without any arguments.)

1st -blank-

today

sqrt

count

2nd -blank-

round

now

sqrt