$ sudo apt-get update
$ sudo apt-get install db5.1-sql-util 

db5.1-sql-util is installed in your system.

Make ensure the db5.1-sql-util package were installed using the commands given below,

$ sudo dpkg-query -l | grep db5.1-sql-util *

You will get with db5.1-sql-util package name, version, architecture and description in a table

db5.1-sql-util package basic information: