Introduction to SQL | 365 Data Science Courses

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SQL is one of the fundamental programming languages you need to learn to work with databases. When you are a data scientist in a company and you need data to perform your analysis, you usually have two options: extract it on your own or contact the IT team. Of course, the ability to extract your own data is an extremely valuable skill to have. In this course, we will teach you everything you need to know in terms of database management and creating SQL queries.
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Video Timestamps:
0:00 Welcome to SQL
4:00 Why SQL?
7:17 Why MySQL?
9:15 Introduction to databases
13:59 SQL as a declarative language
16:10 Data definition language (DDL)
20:23 SQL keywords
21:35 Data manipulation language (DML)
26:30 Data control language (DCL)
31:34 Transaction control language (TCL)
Whether you are working in business intelligence (BI), data science, database administration, or back-end development, you will have to retrieve information from a server storing large amounts of data. To achieve this, you need SQL. The relational database management system we chose for this course is MySQL. We did that because MySQL is open-source, reliable, and mature. In one of the videos of this section, we will provide you with step-by-step guidance when you install MySQL Server and MySQL Workbench. The introductory part of this course pays significant attention to database theory. You will learn the meaning of terms like database, data table, data entity, record, field, relation, and more.
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