On Sun, 08 Mar 2020 14:16:09 -0400, Dennis Lee Bieber wrote:

> {The HHMLL based upon the Flores text. The only other place I've seen
> one used is in the file system of the Commodore Amiga}
>
I've done just that in Java, for a fairly complex data structure. I
designed first it by drawing an Entity Relationship Diagram. You can see
from this approach that I've done my time designing and tuning databases.

I mapped the ERD into memory by defining a Class for every entity and a
TreeMap object for every prime key. This was very easy to do and has
worked as I wanted it to do from the off.

Then, as the program gor written it was easy to add the various access
methods as methods in the classes they manipulate.


--
Martin    | martin at
Gregorie  | gregorie dot org

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