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This tutorial for beginners will introduce you to Database Terminology.

Video Timestamps:

00:16 Relational Database Essentials
4:47 Database Terminology
13:28 Relational Schemas: Foreign Key
18:09 Relational Schemas: Unique Key and Null Values
21:15 Relationships

What is the first thing that comes to your mind when you hear the word “database”? For many people, this question is more challenging than it might seem at first. An answer like “a big file where much information is stored” is not satisfactory and would not please potential employers.
You should remember there are two main types of databases – relational and non-relational.
The former will be the focus of this course, while the latter regards more complex systems.
Although understanding non-relational databases requires a serious mathematical and programming background, some of the logic applied in its coding is the same as SQL. Likewise, relational databases have a few advantages on their own. A small bit of theory will explain why they are still the preferred choice in many companies and institutions. Databases’ main goal is to organize huge amounts of data that can be quickly retrieved upon users’ request.

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