Domains and Logical Types in Data Modeler
Been out of serious design work for a long time. Can someone provide a good pointer to descriptions on Domains and Logical Types and presented in the Data Modeling tool?
For instance I am having trouble tracking the following distinctions:
Domain Logical Type
LongText Varchar
ShortText Char
Text Char
NText NTEXT
NVarchar NVARCHAR
CHAR and VARCHAR are listed as Logical Types but not Domains. There is a TEXT logical type, but ironically, it does not correspond to the Text Domain. Varchar2 appears in neither list. I believe I ready the N* domains/types are for international characters (multi-byte?), but basically see no pattern here so was hoping someone could straighten me out.
Thanks,
Robert Kuropkat