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In this Tutorial, we will evaluate the values of GM for each ship on the criteria stability and comfort for the crew. These criteria will be used to decide which ship is the most ideal, based on GM. Finally, we will generate one solution in which all the results of the previous tutorials are presented.

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First, we'll clean up the workbase from any solution.

Remember that we put the gave attributes to the object Ships? It was These were used to make the object a multi case entry to the database, and when the process manager Process Manager was started, the entire contents of the object could be selected as data. For the next steps in the this Tutorial, we want to use the Ships object, containing all our variations, as dataset in part of a relation. As we already discussed with the Hull object, this is only possible when is it can be seen as object from the entry point in the dataset. However, at this moment Ships itself is the entry point.

So to use Ships as a separate dataset we should do the following: 

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• Add a new object Data to the knowledge base (see previous tutorial, Hull) and add this object to the top of the dataset, by dragging it tot the Dataset node.

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• Now you have to objects, Data and Ships in the top level of Dataset

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• .

  Now add @DBENTRY and @DBOBJECT to the object Data and remove these from the Ships objectthe Ships object. Object Data has become your entry point;

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