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## The Event System Demonstration Item Type

The Event System demonstration is associated with an item type called Event System Demonstration. Currently there are eleven workflow processes associated with Event System Demonstration:

- Buyer: Top Level PO

- Buyer: Send PO to Supplier

- Buyer: Receive Supplier PO Acknowledgement

- Buyer: Advanced Shipment Notice

- Buyer: Receive Supplier Invoicing

- Supplier: Top Level Order

- Supplier: Get Order Details

- Supplier: Credit Check

- Supplier: Stock Check

- Supplier: Advanced Shipment Notice

- Supplier: Send Supplier Invoice

To view the details of the Event System Demonstration item type in the Workflow Builder, choose Open from the File menu. Then connect to the database and select the Event System Demonstration item type, or connect to a file called wfevdeme.wft in the `<ORACLE_HOME>\wf\Data\<language>` subdirectory on your file system.

If you examine the property page of Event System Demonstration, you see that it has a persistence type of Temporary and persistence number of days of 0. This means that the runtime data associated with any work items for this item type are eligible for purging as soon as they complete.

The Event System Demonstration item type also has several attributes associated with it. These attributes reference information in the Workflow application tables. The attributes are used and maintained by function, notification, and event activities throughout the process.

Event System Demonstration Item Type Attributes

Display Name | Description | Type | Length/Format/Lookup Type/ Default Value
--- | --- | --- | ---
Event Name | The internal name of the original event | Text |
Event Key | The event key that uniquely identifies the specific instance of the original event | Text |
Event Message | The event message for the original event | Event |
Purchase Order Status | The purchase order status | Text | CREATED
PO Acknowledge Event | The name of the purchase order acknowledgement event | Text |
PO Acknowledge Event Key | The event key that uniquely identifies the specific instance of the purchase order acknowledgement event | Text |
PO ASN Event | The name of the advanced shipment notice event | Text |
PO ASN Event Key | The event key that uniquely identifies the specific instance of the advanced shipment notice event | Text |
PO ASN Event Message | The advanced shipment notice event message | Event |
Order Requestor | The name of the person who requested the order | Text | BLEWIS
To Agent/System 1 | The inbound agent on the Buyer system that receives the event message, in the format `<agent>@<system>` | Text |
From Agent/System 1 | The outbound agent on the Buyer system that sends the event message, in the format `<agent>@<system>` | Text |
To Agent/System 2 | The inbound agent on the Supplier system that receives the event message, in the format `<agent>@<system>` | Text |
From Agent/System 2 | The outbound agent on the Supplier system that sends the event message, in the format `<agent>@<system>` | Text |
Item Number | The item number | Text |
Item Description | The item description | Text |
Subscription GUID | The globally unique identifier of the subscription | Text |

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