What do you call the application that makes requests of the PostgreSQL server?

What is the wrapper around the SQL command CREATE DATABASE?

When retrieving data in a particular table, we use the_____________ statement.

PostgreSQL is:

PostgreSQL is

PostgreSQL has many modern features including:

There is a table t upon which a primary key constraint by the name pk is applied. What will be the correct syntax to drop the constraint?

Which of the following is not defined in the PL/pgSQL?

What is a rollback of transactions normally used for?

Which character function should be used to return a specified portion of a character string?

What do you infer from the following declarations?

1. arrayA type[]

2. arrayB type[][]