What do you infer from the following declarations?

1. arrayA type[]

2. arrayB type[][]

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

What is a rollback of transactions normally used for?

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

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 holds true for functions in PostgreSQL?

PostgreSQL is

PostgreSQL is:

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

What is the wrapper around the SQL command CREATE DATABASE?

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