Given the information, DRAW A FORMAL REQUIREMENT MODEL and NON-FUNCTIONAL REQUIREMENT MODEL

Customer's description of desired software: Customer asked you to develop a parent control software E-Guard' that monitors, blocks and controls internet usage in real time. The E-Guard is a standalone software that can be run in MS Windows, Linux and Mac operating system with the following functions/features. The E-Guard shall allow parents to check web activity, keystroke, chat, email, IM and launched application The E-Guard shall keep a local DB of unhealthy websites and synchronize the DB with the remote server in a daily basis. (note: Remote server is maintained by a 3rd party service vendor who publishes and updates unhealthy websites. t is their responsibility to create and maintain the remote server. Your job is to copy its DB to your local drive in a daily basis) The E-Guard shall block unhealthy websites . The E-Guard shall remove unhealthy words from search engine (note: it is 3rd party's responsibility to create and maintain common unhealthy keywords) Once a suspicious activity is identified, the E-Guard shall take snapshoot of the screen and notify parents by email and text message. The suspicious activities include trying to browse unhealthy websites, nasty words appear in email/chat/IM or typing blocked keywords in search engine. The E-Guard shall allow parents to configure the setting. The setting includes, blacklist, whitelist, blocked keyword, internet time control, categories to be blocked (it is 3rd parth's responsibility to create and maintain the website categories), etc Only authorized users have access to the configuration and uninstall