Obj or view to flatten "cell" records into "row" record

Question

I have ProdPrice records which are essentially "cells" in a price matrix.
create table ProdPrice {
ProdNum number (12,0),
Quality char(1),
Condition char(1),
Price number(15,3),
... (other stuff)
with primary key (ProdNum, Quality, Condition)
where Quality is in [ 0, 1, 2, 3 ] and Condition in [ 0, 1, 2 ]
I want to create a view or object view representing one "row"
in the matrix with that "row" containing all prices with the same Quality. Essentially I want to "flatten" the cells into Quality "rows"
for viewing and editing.
An example Quality "row" type might look like:
create type ProdPriceQualityRow {
ProdNum number (12,0),
Quality char(1),
PriceCondition0 number(15,3),
PriceCondition1 number(15,3),
PriceCondition2 number(15,3),
PriceCondition3 number(15,3)
I think I now need to
create view ProdPriceQualityRowView of type ProdPriceQualityRow
with object identifier (ProdNum, Quality) as ....
but I'm not sure how to complete the view / object and its associated instead of trigger.
Does anyone have any examples of how to create views / objects / triggers that work like this?
I've read most of the Oracle Application Developers Guide - Object Relational Features but can not seem to warp their examples into the above.
Thanks
R.Parr
Temporal Arts

Answer 1

For examples goto askTom.Oracle.com and search for "pivot table".