Hello Fahd,
Sorry not to get back to you sooner. I am working on integrating SQL backups into zipline very soon. I plan on having that in the next release. I have some reservations about putting them in there because I am worried that it will cause the script the time out if you put too much of a load on it, but you can stage it with multiple scripts.
For the moment, you can use AutoMySQL Backup in addition to zipline. I have mine set to do the database backups 1 hour before zipline runs. Let me know if you have any questions on how to set it up and I will be more then happy to answer any questions!
Cheers,
Brett Wilcox
br...@brettwilcox.com