Difference between Sequence diagram and state diagram?

Answer 1

State Diagram is used to give abstract description of the behavior of a system. This behavior is analyzed and represented in series of events that could occur in one or more possible states.

Flow Chart is a diagram descripes an algorithm or a process by using certain shapes.

Both of them are doing the same function. State diagram is summarizing the work of a system while flow chart is giving much detail about the working process of a system

Answer 2

State diagram shows the object undergoing a process. It gives a clear picture of the changes in the object's state in this process.

e.g: ATM withdraw

Card object state: Checking, Approving, Rejecting

sequence diagrams is that sequence diagrams are good at showing sequential logic but not that good at giving you a "big picture view"

Answer 3

In software engineering we use number of diagrams to describe the software system. In sequence diagram the sequence in which an event happen is shown. In state diagram the transition of states is shown.