What kind of triggers are offered by PostgreSQL?

When using LIKE to compare strings, what is the wildcard operator (operator which matches zero or more characters)?

What can be stored in a column of type decimal(4,3)?

What is the default ordering when ORDER BY is not specified?

How do you select a single random row from a table?

What library is used by PostgreSQL for encryption?

PostgreSQL triggers can be written in C directly.

How do you select a single random row from a table?

What command will correctly restore a backup made with the following command?

pg_dump -Fc dbname > filename

A table can have only one primary key column.

What is the default ordering when ORDER BY is not specified?