Top-Down Design

The top-down design is where many smaller departments branch down from a wider topic. For example, a school has a top-down design. There are branches like the administration, the kitchen staff, and the various subjects which all work together under the wider topic of a school.

School

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Administration       Kitchen      Science dept.     English dept.     math dept.      language dept.

           |                        |                       |                        |                        |                            |

principal, secretary  kitchen staff  head of dept.  ---------->  

                                                      teachers who teach it