[Modeling-users] three little questions

[Mario R. <ma...@ru...>]

Hi,

two small questions that I do not remember/find the answer for...
Can anyone remind me:
- how to best incorporate a constraint that a (non-primary, string)
attribute value should be unique ?
- how to best handle enumeration attributes ?
- how to best handle the single quote character when writing out
string values ? (unescaped gives error for sqlite)

Cheers, mario