db

BufferManagerStatistics BufferStatistics CursorMode DB_ASCENDING DB_COMMIT_LOCK DB_CURSOR_FOR_READ DB_CURSOR_FOR_UPDATE DB_DEFAULT_COMPLETION DB_DEFAULT_ISOLATION DB_DELETE_SEEK_NEXT DB_DELETE_SEEK_NONE DB_DELETE_SEEK_PRIOR DB_DESCENDING DB_FILE_STORAGE DB_FLUSH_DATA DB_FLUSH_JOURNAL DB_FORCED_COMPLETION DB_GROUP_COMPLETION DB_INSERT_SEEK_NEW DB_INSERT_SEEK_NONE DB_LAZY_COMPLETION DB_LOCK_EXCLUSIVE DB_LOCK_SHARED DB_MANUAL_LOCK DB_MULTISET DB_NOLOCKING DB_NOLOGGING DB_READ_COMMITTED DB_READ_ONLY DB_REPEATABLE_READ DB_SEEK_EQUAL DB_SEEK_FIRST_EQUAL DB_SEEK_GREATER DB_SEEK_GREATER_OR_EQUAL DB_SEEK_LAST_EQUAL DB_SEEK_LESS DB_SEEK_LESS_OR_EQUAL DB_SERIALIZABLE DB_SINGLE_PROCESS DB_TABLE_BROWSING DB_TABLE_CLOSED DB_TABLE_EDITING DB_TABLE_INSERTING DB_TABLE_RANGE_END DB_TABLE_RANGE_START DB_TABLE_SEEKING DB_UNIQUE DB_UTF8_NAME FIELD_TYPE_ANSISTRING FIELD_TYPE_BLOB FIELD_TYPE_CURRENCY FIELD_TYPE_DATE_TIME FIELD_TYPE_FLOAT FIELD_TYPE_SINT FIELD_TYPE_UINT FIELD_TYPE_UTFSTRING FieldRelation FieldTypeTag IndexMode InsertFlags ObjectLockDuration ObjectLockMode Order RemoveFlags String TableMode TxCompletionMode TxFlushMode TxIsolation WString

enum db::CursorMode A cursor's update mode. Use DB_CURSOR_FOR_UPDATE when reading data that will later be modified in the same transaction. This is not required to actually perform updates, but is highly recommended in concurrent applications because it prevents deadlocks. When a cursor is in DB_CURSOR_FOR_READ mode, it obtains shared locks when data is read. This allows multiple concurrent transactions to read the same data without blocking. When a cursor is in DB_CURSOR_FOR_UPDATE mode, it will always obtain exclusive locks, regardless of whether data is read or written. Exclusive locks do not allow multiple transactions to read the same data. This prevents the possiblity of a deadlock occuring when the data is later modified. See also: Table::create, Table::open, Table::set_sort_order Enumerator: DB_CURSOR_FOR_READ  Cursor will be used primarily to read data. DB_CURSOR_FOR_UPDATE  Cursor will be used to update data.