| 摘要 |
<p>A bill of material for a product is automatically created from a query session on the product structure. The user is first queried on functional product structure. A top down approach, rather than a focus on design details, is encouraged. As the query occurs, a hierarchical tree structure is created on the screen for the user to view. Within a relational database, the structure data is kept in a table which is accessed by item number. Once the product structure is established, the user can see the hierarchical tree and check it for correctness. From the tree structure, which has been captured in the relational database, the indented bill of material is built.</p> |
