Introduction to SQL (DataCamp)
Much of the world's raw data—from electronic medical records to customer transaction histories—lives in organized collections of tables called relational databases.
Much of the world's raw data—from electronic medical records to customer transaction histories—lives in organized collections of tables called relational databases.
SQL is an essential language for building and maintaining relational databases, which opens the door to a range of careers in the data industry and beyond. You’ll start this course by covering data organization, tables, and best practices for database construction. The second half of this course looks at creating SQL queries for selecting data that you need from your database. You’ll have the chance to practice your querying skills before moving on to customizing and saving your results. PostgreSQL and SQL Server are two of the most popular SQL flavors. You’ll finish off this course by looking at the differences, benefits, and applications of each. By the end of the course, you’ll have some hands-on experience in learning SQL and the grounding to start applying it to projects or continue your learning in a more specialized direction.
Define SQL and explain how relational databases organize and store structured data. Identify tables, fields, records, and data types within a database schema. Write basic SQL queries to select and retrieve data from relational tables. Apply SQL clauses like SELECT, FROM, DISTINCT, and AS to customize query results. Compare SQL flavors and recognize how SQL syntax varies across common database systems.
SQL
Free
Yusuf Saber
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