Subject RE: [Firebird-Architect] Architectural Divergence
Author Samofatov, Nickolay
Hi, Jim!

> Nickolay chose to make the second word of the blob id a union of a 32
> record number and pointer (64 bits). The alignment rules force the
> of the structure to 128 bits.

Have you tried to read sources?
I use 32-bit temporary ID for blob, thus I fully preserved backward
compatibility at all levels.

Nickolay Samofatov