How many chars EA supports as a "database field"

[Hardy]

I am creating sequence diagram to reflect some of existing old systems. I use class as lifeline in the sequence diagram, I want to use actual functions as message between lifelines. I reverse the code into my class diagram to get classes first.

In my old systems, many of the functions have lots of parameters. When I select this kind of function as my message I got error message "Message data is too large for database field. Please shorten message parameters and retry."



So what can I do with it?

[qwerty]

IIRC most of them are about 256 chars. You can download a RDBMS creation schema and verify the column size for the according table.

Changing the column size has been done by a few people but it's not really recommended as nobody will know the side effects.

q.

P.S: Do NOT use classes in sequence diagrams. Use instances!

[Hardy]

why not class in sequence diagram?

[qwerty]

a) a SD shows how instances communicate. It's a real life example. A class does not communicate, only an instance.
b) if you VC your model you will simply destroy it this way. It's also written somewhere in the help.

q.