On 11/02/2010, at 7:55 AM, Lim Hock-Chai wrote:

A PHN_OR_PIN 10B 0
A TID 2B 0

Database Binary fields are a strange beast. They are not Integers and they can contain decimal positions. The allocated storage is a function of the number of digits and they don't support the full (expected) range of normal integers.

A Binary field with between 1 and 4 digits will occupy 2 bytes of storage. Between 5 and 9 will occupy 4 bytes of storage, between 10 and 18 will occupy 8 bytes of storage.

TID is defined as 2 digits therefore it will occupy 2 bytes with a maximum value of 9,999

PHN_OR_PIN is defined as 10 digits therefore it will occupy 8 bytes with a maximum value of 999,999,999,999,999,999

Regards,
Simon Coulter.
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