Subject Re: [firebird-support] how read commited is implemented
Author Ann Harrison
laimisnd wrote:

>Can anyone share information how FireBird is implementing read
>I am interested in the general model used(i.e. does writers block
>readers and vice versa, etc) and more details like what files or file
>structures are involved internaly by the Firebird.
Firebird keeps back versions of records that have been updated or
deleted, and
has a way to determine which version of a record a specific transaction
see. Readers don't block writers and writers don't block readers.