A database dump is a file with database contents and special commands used to re-create its complete copy on another server. So, a dump is a backup copy of a database, which you can use to restore your database to the state it was in when the dump file was created.
On your server
You can obtain a database dump by using a database management tool in your web-hosting control panel. Quite often popular web application phpMyAdmin is used for this purpose by web hosting companies. Use the Export tab in that web app to download a dump file to your computer. During export, you can optionally select the exported file to be automatically compressed to a ZIP or TAR.GZ archive.
In Webasyst Cloud
A dump file of your Cloud account can be received from the Webasyst support team. Simply send a written support request via your Customer Center. Note that database dumps may be not provided to owners of free trial accounts.