Different Types Of Dependency Relationships

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We cannot give a definition to finish-to-start (FS), start-to-start (SS), finish-to-finish (FF), and start-to-finish (SF) terms without explaining the meaning of task dependency in project management science. In project management we refer to task dependency as the different types of relationships that can be established among project tasks, whereas, dependency defines the sequences of the processes which are intended to be conducted through the software or the project life cycle. Generally speaking, there are four types of dependency relationships: Finish-to-start (FS): If you have two tasks A and B, you have to finish first task A and then start task B. Example: Usually the second shift of a security guard wouldn 't start unless the first shift of the first security guard ends. Start-to-start (SS): Again if you have two tasks to perform A and B, you are not allowed to start task B until task A starts first, however, you are completely flexible to start task B any time after task one starts. Example: Turning off the old network system, right after the new network system starts operating. Finish-to-finish (FF): In this case task B can’t finish unless task A is finished first but they are not necessarily to end at the same time. Example: Vehicles manufactures usually install the wires and inspect them synchronously, it is impossible to finish inspection till all the wires are installed. Start-to-finish (SF): This type of relation slightly implemented, you need to start
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