Errata

"is for a blue Ghia but she does not mind which model"

now reads

"is for a blue Ghia but she does not mind which car"

(change "model" to "car")

Also, the code sample has been changed to:

SELECT cml.car_name
FROM model_color_links mcl
, car_model_links cml
WHERE mcl.model_name = cml.model_name
AND mcl.color_name = 'Blue'
AND cml.model_name = 'GL'

been switched.

The words "mananged by" and "the manager of" have been switched.

"In other words, the subtypes must be mutually exclusive, and
there cannot be any occurances of the subtype which do not
belong to a subtype."

the last word now reads "supertype" rather than "subtype"

last code example on the page now reads:

SELECT *
FROM t
WHERE NVL(:p, '$NULL') = NVL(t.a,'$NULL');

* For each tablespace, always set PCTINCREASE to zero, because any
other value is liable to cause tablespace free space fragmentation.

* For each tablespace, set the values of INITIAL and NEXT equal to each
other.

* For objects within a tablespace, do not ordinarily specify the
INITIAL, NEXT, or PCTINCREASE values (allow them to be inherited from
the tablespace).

"If PCTFREE and PCTFREE are too close together..."

Should be "If PCTFREE and PCTUSED are too close together..."