I might need to convert an Oracle DB from ISO8859-15 (Latin-9) to UTF-8? So my question is: Is ISO8859-15 (Latin-9) a full subset of UTF-8?
Because than there should be a lower risk of things going wrong. Any experience here?
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No, `UTF-8` was designed for backward compatibility with `ASCII` (the first 128 characters of Unicode. Whatever above is UTF-8 encoded using *two to four* one-byte code units). BTW, always perform a full backup before experimenting… – JosefZ Nov 10 '20 at 12:13
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Every supported codepoint that maps to ISO-8859-15 is supported by UTF-8, because UTF-8 supports all Unicode codepoints. – Mark Tolonen Nov 11 '20 at 07:12