Free online course PosgresSQL

Course Description

The "PostgreSQL" course clocks in at a precise duration of 4 hours and 14 minutes, offering a comprehensive exploration into the world of PostgreSQL. Garnering an impressive average rating of 5 stars out of 5, it’s evident that this course has resonated positively with learners. Categorically situated in the realm of Information Technology, and more specifically under Databases, this course provides an extensive dive into both fundamental and advanced aspects of PostgreSQL.

The journey begins with foundational concepts such as understanding what a database is, the definition and importance of SQL and relational databases, and an introduction to PostgreSQL itself. From there, learners are guided through the installation processes for different operating systems, including both Mac OS and Windows. Insights into the differences between GUI clients and Terminal/CMD clients are also provided, ensuring a well-rounded grasp of the various methods of interaction with PostgreSQL.

Deeper into the course, participants will learn about creating and managing databases, including connecting to databases and understanding the dangers of certain commands. The creation and manipulation of tables are thoroughly covered, beginning without constraints and advancing to creating tables with constraints. A notable highlight is the practical segment on generating datasets using tools like Mockaroo, which helps in creating thousands of rows for practice and experimentation.

SQL querying is an essential component of database management, and this course does not disappoint. Learners will explore the intricacies of the `SELECT FROM` statement, ordering results, making distinctions with the `DISTINCT` keyword, and utilizing various clauses and operators. This includes the `WHERE` clause, `AND`, comparison operators, `IN`, `BETWEEN`, `LIKE`, and `iLIKE`. Advanced aggregation techniques such as `GROUP BY`, `GROUP BY HAVING`, and various arithmetic operations including calculating min, max, and sum, are also explicated.

Moving further, you'll delve into the usage of timestamps and date-related functions, managing primary keys and unique constraints, and performing essential data operations like deleting and updating records. The concept of `UPSERT` and handling conflicts are also demystified, enhancing your ability to manage data integrity efficiently.

No database course would be complete without touching on relationships and foreign keys. This course brilliantly covers the creation and maintenance of relationships between tables, including updates and deletions that involve foreign keys. Additionally, exporting query results to CSV and understanding extensions further equip learners with the necessary tools to handle real-world database tasks.

Finally, learners will delve into advanced topics such as understanding and utilizing UUIDs, with a focus on using UUIDs as primary keys to ensure robustness and uniqueness within databases. By the end of this course, learners will have a solid understanding of PostgreSQL, making them well-equipped to handle database challenges in their professional and personal projects.