Lire notes a propose de cette table.
Profiles des pays (BBC).
Quelques points:
- Il y a une table appelée
bbcavec près de 200 entrées. - La première entrée est
AfghanistanenAsia - La dernière entrée est
ZimbabweenAfrica. - La table a 5 colonnes ou
attributs:name (nom)region (région)area (superficie)population (population)gdp (PIB)
Un extrait de la table bbc
| name | region | area | population | gdp |
|---|---|---|---|---|
| Yemen | Middle East | 536869 | 21500000 | 12255000000 |
| Zambia | Africa | 752614 | 11000000 | 4950000000 |
| Zimbabwe | Africa | 390759 | 12900000 | 6192000000 |
Notes
PIB par habitant
Le PIB par habitant est le PIB divisé par la population. C'est une mesure approximé du salaire moyen. Un pays riche est un pays avec un PIB par habitant élevé.
Source
Ces données ont été collectés dans le profile des pays de la BBC - elles peuvent être un peu ancienne. La version la plus récente peut être trouvée ici: http://news.bbc.co.uk/2/hi/country_profiles/default.stm Quelques modifications ont été effectuées - le lecteur attribuera les erreurs à l'auteur du site et non à la BBC.
Superficie
La superficie est mesurée en kilomètres carrés
PIB
L'auteur a pris la liberté de multiplier le Revenu National Brut (publié par la BBC) par la population. L'auteur est conscient que ce n'est pas correct mais le but de ce tutoriel est d'apprendre les bases de données, pas l'économie.
Notation scientifique
Certaines implémentations de SQL pourront montrer des grands nombres en notation scientifique. Le nombre
6.23 E9
signifie 6.23 x 10
9
soit 6.23 x 1,000,000,000 soit 6,230,000,000
Un million est
10
6
soit 1,000,000
Un milliardest 10
9
soit mille million soit 1,000,000,000
Un trillion
est 10
12
, qui est un million de million soit 1,000,000,000,000.
| Language: | English |
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Note from Andr3w, the page author, to anyone helping with this page — human or AI
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