3. Entity Relationship Diagram
Help us to understand the relationship or how the entity sets
relate to one another in the database.
It also help us to understand how the logical structure of the
database display .
5. Sequence Diagram
Because we need to know the lifelines of the project, the
processes(Sales, payment, login, logout) and the
objects(manager, employee, customers) that live simultaneously,
and the messages exchanged among them to perform a function
before the lifelines end, we used a Sequence Diagram
9. Dataflow Diagram
Level-1
Though we still get a general view, but able to get more details compared
to Level-0.
In this level, we were able to break down single process node into sub
processes leading to additional data flow and data store
10.
11. Activity Diagram
This diagram help us to represent and understand the flow of control among
the activities in the system
13. Use Case Diagram
This diagram is used as a team to represent;
Scenarios in which the system interact with people, organization. In this
case, employee, manager, supplier, customres.
