Conference Video Call SystemA company need to create a local conference video call system to facilitate the communication between its employees across the world. The requirements are:·  The admin shall be able to add new users to the system.·  The admin shall be able to remove users from the system.·  The user shall have a contact-list containing other users.·  The user shall be able to add other users to his contact list.·  The user shall be able to schedule a conference video call.·  The user shall be able to invite other users from his contact list to his conference video call.·  The user shall be able to accept/reject a conference video call·  The user shall be able to join conference video call that they were invited to.·  The user shall be able to send chat messages in the conference video call chat.·  The system shall notify the user when an accepted conference video call time is close.·  The system shall notify the user when another user accepts/rejects their invite.Assignment1: Design a block diagram for the system.Assignment2: Design a Database schema for the system.Note: assume any missing requirementPlease write it as doc and make it simple design.This is not coding assignment , just thinking written in design.

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