При работе через BDE - файл bde32.hlp

DbiBcdFromFloat Converts FLOAT data to binary coded decimal (BCD) format.
DbiBcdToFloat Converts binary coded decimal (BCD) data to FLOAT format.
DbiDateDecode Decodes DBIDATE into separate month, day and year components.
DbiDateEncode Encodes separate date components into date for use by DbiPutField and other functions.
DbiGetDateFormat Gets the date format for the current session.

DbiGetNumberFormat Gets the number format for the current session.
DbiGetTimeFormat Gets the time format for the current session.
DbiSetDateFormat Sets the date format for the current session.
DbiSetNumberFormat Sets the number format for the current session.
DbiSetTimeFormat Sets the time format for the current session.
DbiTimeDecode Decodes time into separate components (hours, minutes, milliseconds).

DbiTimeEncode Encodes separate time components into time for use by DbiPutField and other functions.
DbiTimeStampDecode Extracts separate encoded date and time components from the timestamp.
DbiTimeStampEncode Encodes the encoded date and encoded time into a timestamp.