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DELFOR Delivery Schedule Message - Eurofer

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UN/EDIFACT D97.A <strong>DELFOR</strong> - <strong>Delivery</strong> schedule message<br />

2. DATA MODEL<br />

2.1 Data Model Format<br />

The data model has been created to make it possible for potential users to understand the<br />

<strong>Eurofer</strong> subset of the <strong>Delivery</strong> schedule message. This data model gives the following<br />

information :<br />

- contents of the information (data elements) that can occur in the message,<br />

- relationships between the different data elements,<br />

- grouping of the data elements within the data entities,<br />

- and the relationship between data entities.<br />

To simplify the understanding of the data model, the model is defined at a summary level,<br />

description specifying when necessary a group of data elements instead of each data<br />

element.<br />

The data model consists of data entities, the relationships between those data entities and the<br />

attributes (data elements) in each data entity.<br />

An entity specifies an object against which information is held; it has a name, a description<br />

and attributes.<br />

An attribute describes a unique characteristic (information which can appear on the delivery<br />

schedule); it has a name, a description and a value.<br />

The relationships of the data entities within the data model are reflected in the structure of<br />

the diagram in chapter 2.2.<br />

Page 7

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