Database Reference
In-Depth Information
+-----------+-------------------+----------------------+
| family_id | scientific_name | brief_description |
+-----------+-------------------+----------------------+
| 136 | Fregatidae | Frigatebirds |
| 137 | Sulidae | Boobies and Gannets |
| 138 | Phalacrocoracidae | Cormorants and Shags |
| 139 | Anhingidae | Anhingas |
| 145 | Cathartidae | New World Vultures |
| 146 | Sagittariidae | Secretary-bird |
| 147 | Pandionidae | Osprey |
| 148 | Otididae | Bustards |
| 149 | Mesitornithidae | Mesites |
| 150 | Rhynochetidae | Kagu |
| 151 | Eurypygidae | Sunbittern |
| 172 | Pteroclidae | Sandgrouse |
| 199 | Bucconidae | Puffbirds |
| 200 | Galbulidae | Jacamars |
| 207 | Cariamidae | Seriemas |
+-----------+-------------------+----------------------+
For some reason, the data didn't match the 15 rows in the
bird_orders
table. I had to
determine why these didn't match. Let's look at how I resolved a couple of them.
I looked up the name of the order to which the Osprey belongs and found that there are
two possible names:
Accipitriformes
and
Falconiformes
. Cornell used the
Accipitriformes
,
whereas my
bird_orders
table has the
Falconiformes
(i.e.,
order_id
112). I'll use
that one and update the
bird_families
table:
UPDATE
bird_families
SET
order_id
=
112
WHERE
cornell_bird_order
=
'Accipitriformes'
;
I could have used the
family_id
in the
WHERE
clause,but by doing what I did here, I
discovered two more bird families that are in the
Accipitriformes
order and updated all
three in one SQL statement. Digging some more, I found that four of these bird families
are part of a new order called
Suliformes
. So I added that order to the
bird_orders
table and then updated the rows for those families in the
bird_families
table. This
method of clean-up is common when creating a database or when importing large
amounts of data from another database.
Next, I'll do some clean-up by dropping the extra column I added (
cor-
nell_bird_order
) to the
bird_families
table and the
cor-
nell_birds_families_orders
table:
