Pratique du Shadowing: PostgreSQL in 100 Seconds - Apprendre l'anglais à l'oral avec la vidéo

PostgreSQL, the most trusted name in open -source relational databases.

Its development dates all the way back to 1986 at UC Berkeley, under the direction of Michael Stonebraker.

Like other pure relational databases, it stores data in tables, columns, and rows, and uses structured query language to read and write data.

However, PostgreSQL is technically an object relational database, which means it can create its own custom data types to store objects with properties

and support advanced features like inheritance and polymorphism.

When writing data, it runs fully ACID -compliant transactions, but also adds its own special sauce called multi -version concurrency control,

which gives each transaction a snapshot of the database, allowing multiple transactions to run at the same time without traffic jams or locks.

Developers also love its extensibility.

Queries can be reused by writing stored procedures, and it even supports languages beyond SQL like Python and C.

And it has a robust ecosystem of extensions, like PostGIS to provide geospatial data for apps like Uber, or Citus to shard and distribute the database to any scale,

or PG embedding to give AI chatbots long -term memory, and the list goes on.

To get started, you can download and install it locally, or better yet, use a free cloud database like Neon, which provides autoscaling out of the box and a nice UI to manage your data,

in addition to a bunch of other advanced features like branching.

Create a new database, then head over to the SQL editor to run your first query, or connect it to your IDE with an extension like SQL tools we could get started by creating a new table.

But because this is an object -relational database, let's begin by creating a custom data type, which defines the structure of an object with corresponding properties and types.

What's awesome about Postgres, though, is that we have more exotic data modeling options, like arrays can be used by putting brackets in front of a type,

then make it a two -dimensional array by adding another set of brackets.

We also have JSON data types to handle unstructured data, and even key value pairs with extensions like hstore.

Now that we have this custom type, we can use it within one or more tables, like one table for programmers and another for designers.

Once the table is created, we can then use an insert statement to add a row of data into it.

Notice the use of a double colon to cast a string into JSON or H store types.

And now finally, we can read the data with a select statement

that uses dot notation to access the properties on our custom object.

Every table has a unique primary key, and we can create relationships by storing the primary key from one table as the foreign key on another, like a programmer might own many Lambos.

We can then find those Lambos by doing a join query that compares the programmer's ID to the Lambo's owner ID.

This has been PostgreSQL in 100 seconds.

Big shout out to NeonDB for sponsoring and making this awesome database free to use in the cloud.

Thanks for watching, and I will see you in the next one.

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Vocabulaire et conseils d’expression pour cette leçon

Cette leçon d’expression orale s’appuie sur la vidéo « PostgreSQL in 100 Seconds ». Les mots qui reviennent le plus souvent : database, table, type, object, relational. Cette vidéo contient 28 phrases et 539 mots à répéter en shadowing. La partie parlée dure 2:36. Le locuteur parle vite, environ 207 mots par minute : attendez-vous à des liaisons et à des sons réduits. Seuls 75 % des mots font partie des 3 000 mots les plus courants en anglais, le vocabulaire est donc exigeant.

Vocabulaire clé de cette vidéo

15 mots de la vidéo à retenir, avec leur prononciation et leur sens :

Mot	Prononciation	Sens
database nom	/ˈdeɪtəˌbeɪs/	base de données, banque de données
custom nom	/ˈkʌstəm/	coutume
query nom	/ˈkwɪɹ.i/	question
extension nom	/ɪkˈstɛnʃən/	extension
cloud nom	/ˈklaʊ̯d/	nuage
array nom	/əˈɹeɪ/	éventail
programmer nom	/ˈpɹoʊɡɹæmɚ/	programmeur, programmeuse
compare verbe	/kəmˈpɛɚ/	comparer
select verbe	/sɪˈlɛkt/	choisir, sélectionner
procedure nom	/pɹəˈsiː.d͡ʒə/	procédé, procédure
designer nom	/dɪˈzaɪnɚ/	designer, styliste
string nom	/stɹɪŋ/	corde
connect verbe	/kəˈnɛkt/	accoupler, connecter
define verbe	/dɪˈfaɪn/	déterminer
developer nom	/dɪˈvɛləpɚ/	concepteur, développeur

Prononciation à surveiller

Les sons « sh » et « zh »: extension /ɪkˈstɛnʃən/, transaction /tɹænˈzækʃən/, shout /ʃaʊt/, dimensional /daɪˈmɛn.ʃə.nəl/, notation /noʊˈteɪʃən/
Mots longs — placez bien l’accent: developer /dɪˈvɛləpɚ/, technically /ˈtɛk.nɪˌkəl.i/, dimensional /daɪˈmɛn.ʃə.nəl/, inheritance /ɪnˈhɛɹɪtəns/, ecosystem /ˈikoʊˌsɪstəm/

Les sons difficiles pour les francophones :

/tʃ/ et /dʒ/ — à ne pas adoucir en « ch » et « j »: procedure /pɹəˈsiː.d͡ʒə/, jam /ˈd͡ʒæm/, chatbot /ˈtʃætbɑt/
/r/ anglais — langue recourbée, sans frotter la gorge: query /ˈkwɪɹ.i/, transaction /tɹænˈzækʃən/, array /əˈɹeɪ/, bracket /ˈbɹækɪt/, programmer /ˈpɹoʊɡɹæmɚ/

Comment s’entraîner avec cette vidéo

Écoutez la vidéo en entier une fois sans parler et notez les mots que vous ne connaissez pas.
Commencez à la vitesse 0,75×, répétez phrase par phrase, puis revenez à la vitesse normale quand cela devient facile.
Enregistrez-vous et comparez avec l’original, en faisant attention à des mots comme database, custom, query.

Qu'est-ce que la technique du Shadowing ?

Le Shadowing est une technique d'apprentissage des langues fondée sur la science, développée à l'origine pour la formation des interprètes professionnels. Le principe est simple mais puissant : vous écoutez de l'anglais natif et le répétez immédiatement à voix haute — comme une ombre suivant le locuteur avec un décalage de 1 à 2 secondes. Les recherches montrent une amélioration significative de la précision de la prononciation, de l'intonation, du rythme, des liaisons, de la compréhension orale et de la fluidité.

Technique du shadowing : lire le guide complet étape par étape →

Pratique du Shadowing: PostgreSQL in 100 Seconds - Apprendre l'anglais à l'oral avec la vidéo

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