System Document describing what the system does.

Question

We have a bunch of requirements documents and class diagrams, but are missing the document that brings it all together.

What is the correct term for a document that gives an overview of what a system does? Or what is the best way to present an overall picture of what is going on.

Something that starts with a high level picture of what’s going on, describes what the system provides, who it interacts with, and any dependencies, etc ?

Answer 1

What about a nice Domain model?

Answer 2

You said it yourself: System Overview.

Answer 3

Back in the 2167A and MIL-498 days we called it a Software Product Specification (or SPS).

If that isn't quite what you are looking for, try surfing around Simon's MIL-498 document website and see if one looks like what you need. You (probably) don't have to follow any of them exactly, but they make good templates.

Answer 4

Sounds like an architecture document to me. http://en.wikipedia.org/wiki/Software_architecture