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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. Now you have to objects, Data and Ships in the top level of Dataset.
• Next add@DBENTRY and @DBOBJECT to the object Data and remove these from the Ships object. Object Data has become your entry point;  Now add a Ships object to the Data object by dragging the Ships object from the Knowledge Browser to the Data object in the Dataset. Now you have a Ships object in the Data object and you still have the Ships object on the top level;
• Now copy the data in the Ships object on the top level to the Ships object inside the Data object in the same way that you copiedYou copied here. You will be asked whether or not to create new parameters, select Yes to All and continue;
  
  
• And finally you want to delete the Ships object on the top level. Select the Ships object in the tree and press DEL; 

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