The "typical" SQL DBMS supports most of the standard character data types, but
often uses preferred local names. For example, Oracle has a 2000-byte maximum
(2048 for Oracle Lite) for the CHAR <data type> and offers a
(non-standard) LONG VARCHAR type to define larger character
string fields.
Sybase allows for a large variety of Character sets, with only one "group"
(Character set) allowed at a time. Baltic languages are in the East European
group (8859-2), though it doesn't seem possible to get a correct result in
this case. Collations supported are: English+French+German (all together!),
Spanish, Hungarian, Russian; then everything else is binary. Sybase does not
support SQL CHARACTER SETs, COLLATIONs or
TRANSLATIONs, nor does it support
CONVERT -- to convert you need an offline utility. It does
provide some Unicode support.