Design the workflow diagram for Customer and Salesman interaction.

Describe the naming convention that should be followed for the various layers of a data-flow diagram.

write the simple scenario for school system and draw the data flow diagram(DFD) and Entity-Relationship diagram(ERD)?

How can you create a conceptual model based on ER diagrams?

19. Most activities in a network diagram have a finish-finish relationship.     True   False

Can you please explain this with a diagram and the steps to follow together with the diagram?

Provide some advice on how to draw a good data-flow diagram.

here are many different types of interaction diagram, each of which emphasizes a different aspect of the interaction.

draw Entity Relationship Diagram (ERD) for scenairo: “There is a group of employees who have run the website. Three admins are responsible to check registration forms filled by babysitters.  An accountant is responsible to check fees payments. All these employees are supervised by the manager.    Each babysitter can register on the website one time by filling in her data including first and last names, qualifications, fee rate per hour (25 SAR per Hour), contact information, address, photo, and years of experience.  The system will issue for her id and registration date.   Mothers can make booking as many as they need.  For each time, they must fill in their names, contact information, address, number of children, the date and time (e.g. from 2:00 PM to 4:PM) of booking.    The website will generate the booking report including mother’s data, babysitter’s contact data, number of booked hours, fee rate per hour, fees total amount, and tax (%5).  To make a payment, the mother needs the…