[Info-vax] VMS Software: New US Mailing Address

[Simon Clubley]

On 2022-10-14, Arne Vajhøj <arne at vajhoej.dk> wrote:
> On 10/13/2022 10:05 PM, Richard Maher wrote:
>>   IIRC Oracle/Rdb is the only RDBMS that executes in the context of the 
>> calling process through DSRI. Sounds pretty efficient. Dynamic qyuery 
>> optimization notwithstanding.
>
> There are lots of databases executing in process context:
> SQLite, Firebird, H2, HSQLDB, good old (or bad old depending on view)
> Access.
>
> Rdb uniqueness is:
> - it supports both executing in process context (embedded SQL,
>    SQL modules, JDBC native driver) and executing in separate
>    server (JDBC thin driver, SQL Services API, ODBC)
> - even when executing in process context there are still some
>    central administrative processes running
> - it is geared towards large usage while traditional embedded
>    databases are really geared towards small usage or test
>

And IIRC, isn't Rdb _fully_ and closely integrated into the VMS cluster
model with full VMS-style disaster recovery on node/site failures ?

Simon.

-- 
Simon Clubley, clubley at remove_me.eisner.decus.org-Earth.UFP
Walking destinations on a map are further away than they appear.