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State about the Activity Diagram
Activity diagrams show flow from one activity to other. It is an ongoing non atomic execution within a state machine. Activity finally results in some action that is made up of executable atomic computations which result in a change in state of system, or return of a value. It consists of activity states, action states, objects and transition states. The activity diagram for encryption of a message send via e-mail is shown as:
Figure: Activity diagram for E-mail encryption
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
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Need 2 projects completed in 3NF format.
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Database systems have many opposite efforts ?
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explain five responsibilities of DBA?
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