методы доступа к базе данных (database access methods)
Ошибки (баги) (Bugs)
The typedef DBT is a mnemonic for "data base thang", and was used
because no one could think of a reasonable name that wasn't
already used.
The file descriptor interface is a kludge and will be deleted in
a future version of the interface.
None of the access methods provide any form of concurrent access,
locking, or transactions.
