Takahiro Itagaki <itagaki.takah...@oss.ntt.co.jp> wrote: > This feature would be useful for migration > from other DBMSes that have non-standard data types. Domains can indeed be useful to allow migration -- if they are used as intended. If you identify all of the unique data domains on your source platform and define the columns with domains rather than bare types, you can easily identify the appropriate mapping on some other platform and declare the appropriate domains there. Migration is then easy. -Kevin
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