A2 ICT project - what are decision tables & four s

[z064life]

A2 ICT project - what are decision tables & four sector diagrams? That's the full topic title - I couldn't fit in the above form.

Anyway, anyone know what these tools are and how they are used? I'm doing a project whereby I make a visual basic application, and I work through the whole of the SDLC. These tools are used in the Analysis stage (I've used DFDs, data analysis, data dictionaries, interviews etc).

My project is 348 pages BTW, and I'm in full pursuit of full marks. I also had the project done one month before the deadline, but with some corrections (small things, like adjusting margins as the page numbers didn't come out, which makes checking such a big project a pain in the ass).

Thanks.