Detailed
Design Document Department of Computer
Science Page maintainer: Terrence
Asgar-Deen |
Viewing a product is described in the above diagram. The user passes a unique product and motif number combination to the system. The product associated with this product number and motif number is retrieved from the datastore. The product information is returned to the user.
The returned status corresponds to the success of the operation. If the product is successfully retrieved from the datastore, the status returns Successful. If the product number and/or motif number do not exist, the corresponding error message is returned.
| Process ID | 1.B.2 |
|---|---|
| Process Name | View Product |
| Inputs | motif number, product number |
| Outputs | product info |
| Permissible User | Administrator, Salesperson |
| Assumptions | All information entered is syntactically correct. |
| Error Conditions | The product specified by the product number and motif number does not exist. |
| Name | motif number |
|---|---|
| Kind | Primary Key |
| Type | Alphanumeric |
| Description | A primary key attribute of entity Product. The maximum length is 3 alphanumeric characters. The format is: 3 digits motif number (mmm). The attribute describes the characteristics of one product. The characteristics includes the different combinations of the components (color, design and font). It is combined with product number to generate the primary key for the entity Product. |
| Name | product |
|---|---|
| Kind | Data movement in DFD |
| Type | Instance of an Entity |
| Description | This data element corresponds to a complete instance of the Entity Product. |
| Name | product info |
|---|---|
| Kind | Data movement in DFD |
| Type | Multiple Field User Input |
| Description | These fields are input values from the User. They correspond to the fields in the Entity Product. Not all fields in the Product data table are necessarily present in an instance of the product information. |
| Name | product number |
|---|---|
| Kind | Primary key |
| Type | Integer |
| Description | A Primary key attribute of entity Product. The maximum length is 4 digits. The format is the type integer. The primary key specifies the unique product number of a product. It is combined with motif number to generate the primary key for the entity Product. |
| Name | status |
|---|---|
| Kind | Data movement in DFD |
| Type | Return Message |
| Description | This data element corresponds to an error message being returned from an operation. An error message may be both successful and unsuccessful. Unsuccessful error messages are further subcategorized into different errors based on the possible errors that can occur in an operation. |
The View Products area can be accessed by selecting View Details from the Items menu, or clicking on the View Details toolbar button when in the Products, or Modify Products areas. The View Product area displays all the product's information. None of the fields are editable. Additionally, the button, View Orders, will jump to the Purchase Orders area and list all the customers that have bought the particular form.
There are several buttons at the lower left side of the area. While the View Product area only displays one product at a time, these buttons allow the user to move to other products. The left and right buttons move to the previous and next product. The outer two buttons move to the first and last product.
Since this information is displayed in the work area, all the menu commands are still available. The Print and Print Preview menu items in the File menu will print a report containing all the details for the current product. The Edit and Delete menu items in the Items menu will open the "Modify Product" area and delete the product respectively.
Salespeople have access to this area.