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Changes
→Mapping Data Types, Metadata
: bit & bit varying - for storing binaries [http://www.postgresql.org/docs/8.1/static/datatype-bit.html]
: BLOBs [http://www.postgresql.org/files/documentation/books/aw_pgsql/node96.html]
: Serial - Auto_Increment - Sequence
:: Serial vs sequence [http://neilconway.org/docs/sequences/]
===Functions===