Retrieve Data using Single-Table SQL Queries
7 435 déjà inscrits
7 435 déjà inscrits
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.
Votre enseignant(e) vous guidera étape par étape, grâce à une vidéo en écran partagé sur votre espace de travail :
Votre espace de travail est un bureau cloud situé dans votre navigateur, aucun téléchargement n'est requis.
Votre enseignant(e) vous guide étape par étape dans une vidéo en écran partagé
par WH25 nov. 2020
A very simple introduction for complete novices. A safe place to start in SQL.
par YA4 juil. 2020
It was a good course but was a bit short. The instructer was good and provided enough tips.
par VT19 juin 2020
This Project provides the basic syntax and well explanation for SQL as well as SQLitestudio.
par DP23 juil. 2020
Short and Simple .... Enjoyed the course and i do appreciate the project guide for her excellent support!