Object Oreinted Software Engineering/uml

OBJECT OREINTED SOFTWARE ENGINEERING ASSIGNMENT#3,4 LAB Group members: SHAKIR BASHIR ALVI M.HANZALA ALI ABBASS Submitted to: ENGR AMINA ASGHAR

USECASE AND CLASS DIAGRAMS DOCUMENTATION: ASSIGNMENT#3: *ACTORS: -operator. -supervisor. OPERATOR: He can login to the system and controls the pump mechanism. SUPERVISOR: His duties are slightly different from the operator. but is also the actor of the following use case diagram. *FLOW OF EVENTS: OPERATOR’S EVENTS: *login to system. *monitoring the water level whether its low water motion or high. *selects on/off on the given conditions. *also acts as methane reader, which extends to two kinds of reading either 24hrs or every 30mts reading. SUPERVISOR’S EVENTS: *he login to the system. *he resets the button. *he can on/off the pump. *he will take the methane reading the after 30days. *he notes the log. *he also acts like a methane reader which extends to -on the alarm -off alarm ENTRY CONDITION/PRE CONDITION: -operator and supervisor must login to system. EXIT CONDITION/POST CONDITION: -after checking the alarms and on/off the pump.