Use Case diagrams, to infinity and beyond?

From: mel smith (hawklord451_at_lycos.co.uk)
Date: 05/29/04 

Date: Sat, 29 May 2004 20:03:29 +0000 (UTC)

In a Use Case Diagram is it correct to expand on a single Use Case using
another Use Case diagram.

i.e. if my diagram had three use cases, "logon to system", "add book
record", "delete book record" within a "Book Record application" system
boundary would it be a correct useage of this type of diagram to expand on
"add book record" within another diagram with a system boundary defined as
"add book record", and (for example) use cases within this diagram which
expand on the "add book record" scenario, i.e. "Create book record", "add
book information", "save book record". Then carry this on until a sufficient
granularity is achieved.

Hope I'm explaining this OK. Can't seem to explain anything anymore without
the use of a few diagrams :-)

Thanking you in advance

nifsmith

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