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| Question | Answer |
| Technical Design | The technical design would indicate which fields in which tables of the database will be involved, maybe even how to name the method to be called when that button is clicked. |
| Functional Design | The functional design specifies WHAT a program should do, the technical design described how that functionality is to be implemented in code. So the functional design may state that the program must attach a courtdate to a file when the user clicks a button with a specific name and position on screen. |
| Technical Design Between who? | Technical design, on the other hand, is the kind of design that is agreed between software architects and software developers. It describes how the system will be built to meet the functional design. It contains detail and terminology not appropriate to business customers but needed by developers. |
| What are the things specified in the TD? | It might describe screen layouts, it might describe database table and column names, it might discuss WSDL or communication protocols and file formats, it might discuss server and operating system versions and dependencies. The point is that it should be detailed enough to enable unit tests, code, configurations, and technical documentation work to begin. |
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