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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.
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.
Database (DBMS)
Problem Solving
Sql Commands
SQLiteStudio
In a video that plays in a split-screen with your work area, your instructor will walk you through these steps:
Your First Query
The SELECT Clause
The ORDER BY Clause
The WHERE Clause
The Combination WHERE Clause
Great Analysis Makes a Great Query
Saving and Reusing Queries
Your workspace is a cloud desktop right in your browser, no download required
In a split-screen video, your instructor guides you step-by-step
by RG
Jun 4, 2020Thanks for this course, this encourages me to do more SQL projects.
by AS
Jun 4, 2020A brief overview and introduction to the Structured Query Language
by WH
Nov 25, 2020A very simple introduction for complete novices. A safe place to start in SQL.
by KD
Oct 11, 2020understandable but some parts of the videos is damaged.
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