Retrieve Data using Single-Table SQL Queries

4.6
별점
250개의 평가
제공자:
Coursera Project Network
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학습자는 이 안내 프로젝트에서 다음을 수행하게 됩니다.

Explain how the concept of data retrieval is used in computer systems.

Generate successful SQL single-table queries for data retrieval.

Apply data analysis techniques to devise a query that answers a request.

Clock1 hour
Beginner초급
Cloud다운로드 필요 없음
Video분할 화면 동영상
Comment Dots영어
Laptop데스크톱 전용

In this course you’ll learn how to effectively retrieve data from a relational database table using the SQL language. We all know that most computer systems rely on at least one database to store data. Your tax information is stored in the database used by the Internal Revenue Service. Your phone stores your contacts’ names, addresses, email addresses, and phone numbers in a database. If you shop online, you’re viewing photos, descriptions, and prices of products that are stored in a database. Database designers go to great lengths to design databases so that the data can be stored securely and in an organized format. It’s important to note that the main reason they go to all that work is so that we can get the data back out again when we need it! That’s called “data retrieval”. Data is retrieved or read from a relational database by using a language called SQL to query (or question) the database. SQL is referred to as “the language of relational databases”. It can be used by itself or embedded in programs to retrieve data. Once the data is retrieved, it can be displayed on a web page or PC application, or even printed on paper. You’ll be practicing writing SQL queries using SQLiteStudio. Next time you go online and look up the daily special at your favorite restaurant, you can think about the fact that it’s likely that an SQL query was used behind the scenes to fetch that data and pop it up on your screen. By the end of this course, you’ll even have a pretty good idea what the query might have looked like! Note: This course works best for learners who are based in the North America region. We’re currently working on providing the same experience in other regions.

개발할 기술

Database (DBMS)Problem SolvingSql CommandsSQLiteStudio

단계별 학습

작업 영역이 있는 분할 화면으로 재생되는 동영상에서 강사는 다음을 단계별로 안내합니다.

  1. Your First Query

  2. The SELECT Clause

  3. The ORDER BY Clause

  4. The WHERE Clause

  5. The Combination WHERE Clause

  6. Great Analysis Makes a Great Query

  7. Saving and Reusing Queries

안내형 프로젝트 진행 방식

작업 영역은 브라우저에 바로 로드되는 클라우드 데스크톱으로, 다운로드할 필요가 없습니다.

분할 화면 동영상에서 강사가 프로젝트를 단계별로 안내해 줍니다.

강사

검토

RETRIEVE DATA USING SINGLE-TABLE SQL QUERIES의 최상위 리뷰

모든 리뷰 보기

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