draw a use case diagram for the following situation Stillwater Antiques buys and sells one-of-a-kind antiques of all kinds. Each item is uniquely identified by an item number and is also characterized by a description, asking price, condition, and open ended comments. Stillwater works with many different individuals called clients, who sell items to and buy items from the store. Some clients only sell items to Stillwater, some only buy items, and others both sell and buy. A client is identified by a client number, and is also described by client name, and client address. When Stillwater sells an item in stock to a client, the owner wants to record the commission paid, the selling price, sales tax and date sold. When Stillwater buys an item from a client, the owner wants to record the purchase cost, the date purchased and condition at the time of purchase.
To draw a use case diagram for the given situation, we need to identify the actors and the use cases involved.
Actors:
1. Stillwater Antiques
2. Clients
Use Cases:
1. Sell Item
2. Buy Item
Here is the step-by-step breakdown of the use case diagram:
1. Create a rectangle in the middle of the diagram and label it as "Stillwater Antiques."
2. Draw two ovals above the rectangle representing the use cases "Sell Item" and "Buy Item." Connect them to the "Stillwater Antiques" rectangle using solid lines.
3. Create a rectangle on the left side of the diagram and label it as "Clients." Connect it to the "Sell Item" and "Buy Item" ovals using solid lines.
4. Inside the "Clients" rectangle, add three attribute fields: "Client Number," "Client Name," and "Client Address."
5. Above the "Sell Item" oval, add the attributes "Item Number," "Description," "Asking Price," "Condition," and "Open Ended Comments" with a solid line connecting them.
6. Above the "Buy Item" oval, add the attributes "Purchase Cost," "Date Purchased," and "Condition at Time of Purchase" with a solid line connecting them.
7. Connect the "Sell Item" oval to the "Buy Item" oval using an arrow pointing from "Sell Item" to "Buy Item." This represents the client's ability to both buy and sell items.
Your use case diagram should now represent the given situation, with "Stillwater Antiques" as the main actor and "Sell Item" and "Buy Item" as the use cases, along with the attributes related to each use case.
To draw a use case diagram for the given situation, we need to identify the actors, use cases, and relationships between them.
1. Actors:
- Stillwater Antiques
- Clients
2. Use Cases:
- Sell Item
- Buy Item
3. Relationships:
- Sell Item: This use case represents the scenario where Stillwater Antiques sells an item to a client. It includes recording the commission paid, selling price, sales tax, and date sold.
- Buy Item: This use case represents the scenario where Stillwater Antiques buys an item from a client. It includes recording the purchase cost, date purchased, and condition at the time of purchase.
4. Diagram:
Sell Item
/ \
/ \
Stillwater Antiques Clients
\ /
\ /
Buy Item
In this diagram, "Sell Item" and "Buy Item" are the use cases, and Stillwater Antiques and Clients are the actors participating in these use cases.
Note: This is a simple representation of the use case diagram based on the given information. Depending on the requirements, additional use cases, actors, or relationships may need to be added.
I really don't see the challenge here, you have a purchase (with purchase orders), and a sales receipt (with a sale receipt). Both use the same data system.
It is beyond my understanding why (for legal reasons) you don't record the condition when sold to a client.
If it were my business, I would also like to have the ability to produce current inventory sheets.