쉐도잉 연습: PostgreSQL in 100 Seconds - 영상으로 영어 말하기 배우기

레슨 만드는 중...
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PostgreSQL, the most trusted name in open -source relational databases.
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Its development dates all the way back to 1986 at UC Berkeley, under the direction of Michael Stonebraker.
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Like other pure relational databases, it stores data in tables, columns, and rows, and uses structured query language to read and write data.
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However, PostgreSQL is technically an object relational database, which means it can create its own custom data types to store objects with properties
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and support advanced features like inheritance and polymorphism.
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When writing data, it runs fully ACID -compliant transactions, but also adds its own special sauce called multi -version concurrency control,
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which gives each transaction a snapshot of the database, allowing multiple transactions to run at the same time without traffic jams or locks.
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Developers also love its extensibility.
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Queries can be reused by writing stored procedures, and it even supports languages beyond SQL like Python and C.
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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,
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or PG embedding to give AI chatbots long -term memory, and the list goes on.
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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,
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in addition to a bunch of other advanced features like branching.
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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.
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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.
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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,
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then make it a two -dimensional array by adding another set of brackets.
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We also have JSON data types to handle unstructured data, and even key value pairs with extensions like hstore.
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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.
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Once the table is created, we can then use an insert statement to add a row of data into it.
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Notice the use of a double colon to cast a string into JSON or H store types.
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And now finally, we can read the data with a select statement
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that uses dot notation to access the properties on our custom object.
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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.
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We can then find those Lambos by doing a join query that compares the programmer's ID to the Lambo's owner ID.
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This has been PostgreSQL in 100 seconds.
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Big shout out to NeonDB for sponsoring and making this awesome database free to use in the cloud.
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Thanks for watching, and I will see you in the next one.
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이 레슨의 어휘와 말하기 포인트

이 말하기 레슨은 영상 “PostgreSQL in 100 Seconds”을(를) 바탕으로 합니다. 가장 자주 반복되는 단어는 다음과 같습니다: database, table, type, object, relational. 이 영상에는 섀도잉할 문장 28개와 단어 539개가 있습니다. 말하는 구간의 길이는 2:36입니다. 화자는 분당 약 207단어로 빠르게 말하므로 연음과 약하게 발음되는 소리가 많습니다. 영어에서 가장 많이 쓰이는 3,000단어에 속하는 단어가 75%뿐이라 어휘가 어려운 편입니다.

이 영상의 핵심 어휘

영상에 나오는 익혀 둘 만한 단어 15개를 발음, 뜻과 함께 정리했습니다.

단어발음뜻
database 명사/ˈdeɪtəˌbeɪs/데이터베이스
custom 명사/ˈkʌstəm/습관, 풍속
query 명사/ˈkwɪɹ.i/질문
transaction 명사/tɹænˈzækʃən/처리
cloud 명사/ˈklaʊ̯d/구름
bracket 명사/ˈbɹækɪt/괄호
programmer 명사/ˈpɹoʊɡɹæmɚ/프로그래머
compare 동사/kəmˈpɛɚ/비교하다, 비유하다
select 동사/sɪˈlɛkt/고르다
procedure 명사/pɹəˈsiː.d͡ʒə/절차, 수단
designer 명사/dɪˈzaɪnɚ/디자이너
string 명사/stɹɪŋ/끈
connect 동사/kəˈnɛkt/잇다, 연결하다
jam 명사/ˈd͡ʒæm/잼
install 동사/ɪnˈstɔl/설치하다, 깔다

주의할 발음

  • “sh”와 “zh” 소리: extension /ɪkˈstɛnʃən/, transaction /tɹænˈzækʃən/, shout /ʃaʊt/, dimensional /daɪˈmɛn.ʃə.nəl/, notation /noʊˈteɪʃən/
  • 긴 단어 — 강세 위치에 주의: developer /dɪˈvɛləpɚ/, technically /ˈtɛk.nɪˌkəl.i/, dimensional /daɪˈmɛn.ʃə.nəl/, inheritance /ɪnˈhɛɹɪtəns/, ecosystem /ˈikoʊˌsɪstəm/

한국어 화자가 어려워하는 소리:

  • /f/ — ㅍ(/p/)으로 바꾸지 말고 윗니를 아랫입술에 대기: define /dɪˈfaɪn/, polymorphism /pɑliˈmɔɹfɪz(ə)m/
  • /z/ — ㅈ이 아니라 성대를 울리는 /s/: transaction /tɹænˈzækʃən/, designer /dɪˈzaɪnɚ/, columns /ˈkɑləmz/, exotic /ɪɡˈzɑtɪk/, polymorphism /pɑliˈmɔɹfɪz(ə)m/

이 영상으로 연습하는 방법

  1. 먼저 말하지 않고 영상을 끝까지 듣고 모르는 단어를 적어 둡니다.
  2. 0.75배속으로 한 문장씩 섀도잉을 시작하고, 익숙해지면 보통 속도로 돌아갑니다.
  3. 자신의 목소리를 녹음해 원본과 비교하고, database, custom, query 같은 단어에 특히 주의합니다.

쉐도잉이란? 영어 실력을 빠르게 키우는 과학적 방법

쉐도잉(Shadowing)은 원래 전문 통역사 훈련을 위해 개발된 언어 학습 기법으로, 다언어 학자인 Dr. Alexander Arguelles에 의해 대중화된 방법입니다. 핵심 원리는 간단하지만 매우 강력합니다: 원어민의 영어를 들으면서 1~2초의 짧은 지연으로 즉시 소리 내어 따라 말하는 것——마치 '그림자(shadow)'처럼 화자를 따라가는 것입니다. 문법 공부나 수동적인 청취와 달리, 쉐도잉은 뇌와 입 근육이 동시에 실시간으로 영어를 처리하고 재현하도록 훈련합니다. 연구에 따르면 이 방법은 발음 정확도, 억양, 리듬, 연음, 청취력, 말하기 유창성을 크게 향상시킵니다. IELTS 스피킹 준비와 자연스러운 영어 소통을 원하는 분들에게 특히 효과적입니다.

섀도잉 방법: 단계별 전체 가이드 읽기 →