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Example_iLog
This test case presents an Intermodal Logistics System (ILS), which deals with the shipping, storing and recieving of goods packaged in Intermodal Tranport Units (ITU). The transportation is carried out on rail and road transport, with terminals able to handle ITU-s fast. More information can be found on the website here. OBDA provides this scenario the information system to monitor and manage the logistic network and operations.
- iLog.owl: the iLog ontology file
- iLog.obda: the mapping file
- iLog.q: the query file
- DBSchema.sql: the SQL script to generate the database schema
After taking a first look at the data and mappings, we give you the description of the transportation system from Intermodal Logistics:
"Transportation across the network is organized as follows. Customers emit requests for work which contain ITUs to be sent from a given terminal to other destinations on the network. The handling agent associates to each request for work a number of transport orders, one for each ITU listed in the request for work. The transport order contains all the data related to the shipping, like ITU route through the network and expected time of delivery. Once the ITU corresponding to a given transport order is collected at a terminal, it is boarded on the first outgoing train whose destination is compatible with its route. Since trains travel across relatively short distances, it is possible to dispatch ITUs more than once during a 24 hours time-span. This helps to keep backlogged ITUs in terminals at a minimum and thus reduce storage costs and terminal “footprint”. Given the above, it is clear that the main activity of such an ILS is to satisfy the demand of transportation in a timely way in spite of events potentially disrupting the service like, e.g., network and rolling stock failures or terminal congestion. Monitoring ITUs from the departure terminal to their final destination is a key enabler towards this goal."
More information about queries and performance can be found here.