A.

The SmartIoT software is illustrative of numerous PC based items and frameworks. The item screens this present reality and responds to changes that it experiences. It additionally connects with a client through a progression of composed sources of info and alphanumeric display. Control panel send user command and data to Interact User process. This process sends a configure request to configure management process and start/stop signal to Activate/Deactivate system process. Configuration information datastore receives configuration data and sends it to the Display messages and status process. Display messages and status process also receive A/D messages and send display information to control panel display. On the other hand Monitor sensor process receives sensor status from sensor and configuration data from Configuration information datastore. It also sends alarm type information to Alarm, sensor information to display messages and status and telephone number tones to telephone lines. 1. Draw a context diagram based of the above scenario. (4 marks) 2. Design a level 1 diagram using the above scenario. (6 marks)

B.

BRACU-Scheduler is a program tasked with staff scheduling and weekly roster creation. Create schedule module first receives a task type flag from the Monitor roster module by providing the current roster status information. Based on the flag, Create schedule can either initiate regular scheduling or a CP-solver by taking into account the staff requests. Generate regular schedule module first retrieves the employees on duty for next week from the Fetch employee module. In order to generate this employee list, Fetch employee module uses Get employee module which is a library module and Resolve calendar conflict module in the order they are mentioned and they return employee list and filtered employee list based on vacation notice, respectively. Until the final roster is created for all employees, Generate regular schedule calls upon the Assign Employee module with details of each employee and receives an assignment data. It then sends this data to Update roster module and receives updated roster. Finally, finished roster is passed onto the Dispatch roster module which is an on-page connector. On the other hand, Create schedule uses a Initiate CP-solver module to generate schedules with staff requests which is an off-page connector. Design a structure chart based on the above information. (7 marks)

C.

The admin side of a multi-vendor eCommerce website allows the admins to add vendors, view all existing vendors and search for vendors from the vendors list page. On the vendor information page, the admins can access the edit vendor and the delete vendor options which allows for the admins to update the information of the vendor and delete the vendor respectively. Both vendors and admins can add products and view all existing products (vendors can only view the products that they have added). From the products list page the vendors and admins can access the product search option. Clicking on a product will show the view product page where the product information can be updated or the product can be archived. Draw the navigation diagram for the above scenario. (7 marks)

D.

Consider a RDBMS team is working to store the records of a newly established school in your area. They have identified the id (9), name (32), mobile (58), guardian's email (21) and address (52) as the fields of records. Considering an overhead of 12% on data volume with initial 529 records and a growth rate of 1003 records per month, calculate the expected volume of the database table in 3 years. The values enclosed by the first bracket indicated the sizes of corresponding fields No need to roundup or precision your answer. Just put the actual value.