To prevent transaction wraparound, a VACUUM operation should be run on every table no less than once every:

Asynchronous Commits:

The rule system:

Only the administrator can make use of tablespaces.

What command turns on timing?

When looking at 'ps' output on a unix system, you see the following: postgres 1016 0.1 2.4 6532 3080 pts/1 SN 13:19 0:00 postgres: tgl regression [local] idle in transaction What does 'idle in transaction' mean?

Premium Corp. uses alphanumeric characters for EmployeeID which contains 7 digits prefixed with 3 characters. The 3 characters describe the department code. You need to show the department code and the Employee number separately, where department code should be in capital letters. Which function(s) will you have to use for this?

Perfect Services provides financial services. You need to display data from the pers table for joining_date from '1/1/2005' to '31/12/2005' and the job should be for Analyst or Clerk or Salesman. Which select statement will you use?

Which of the following keywords can be used to ignore the return data of a function?

Which of the following statements is correct with regard to PostgreSQL?

How can data be accessed by users who do not have direct access to the tables?