Swimlanes
Activity on node is a diagram where every node (circle) represents an activity.
i knew how to draw the activity diagram fro video rental system but i dont know how to attach it here
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A seismograph is a diagram that shows the activity of an earthquake. The longer the line on the diagram, the more violent the shaking of the ground is.
Physical activity
identifying how the interactions have dependencies and grouping them into an activity. Identifying how the objects on a sequence diagram have interactions and dependencies between them and grouping them into an activity to show behavior.
Sequence diagram (UML), activity diagram (UML), traditional flow chart (may be more...)
try www.wikipedia.com which will help you for making ER - Diagram ....and copy past given link below in your browser for detailed description about ER - Diagram :http://www.infocom.cqu.edu.au/Courses/spr2000/95169/Extra_Examples/ERD.htm
An activity-on-node diagram is a visual representation of project tasks and their dependencies. It is used in project management to show the sequence of activities and their relationships, helping to plan and schedule tasks efficiently.
Activity diagram shows the work flow from start point to the end point detailing many decision points. Sequence shows detail flow of specific use case and it also shows interaction between actors, system and system components
To draw an Activity on Node (AON) diagram, start by identifying all the project activities and their dependencies. Represent each activity as a node (usually a rectangle) and place arrows between nodes to indicate the direction and sequence of dependencies. Ensure that each arrow points from a predecessor activity to its successor. Finally, review the diagram for accuracy, ensuring that all activities and relationships are correctly represented.
They are not as they both have the same features it just provides a better understanding when using one diagram in conjunction with the other. State machine diagram shows how state of some object or system could change, so transitions on the diagram are from one state to another state. Activity diagram shows set of actions and how one action could lead to another. In simple cases these diagrams might look like reverse of each other but in practice you need to select whether the diagram is about discrete number of states of some object or is it about organization of actions and activities possibly related to many different objects.