foreign keys) you find necessary. 2. Consider the employee database of Figure 5, where the primary keys are underlined. Give an expression in SQL for each of the following queries: (a) Find the names ...

Use SQL to store data and retrieve it later on. Use SQLite to build relational databases on your computer. Perform CRUD operations on relational databases using SQL. In this lesson, we'll cover ...

Designing an appropriate set of indexes can be one of the more troubling aspects of developing efficient relational database applications. Perhaps, the most important thing you can do to assure ...

Thanks to the technology behind ChatGPT, it’s become surprisingly simple to query a data set in plain English. As with most generative AI, results from OpenAI’s API are still imperfect, which means ...

RIGHT JOIN (or RIGHT OUTER JOIN): It’s the opposite of a LEFT JOIN. It keeps all rows from the right table and matches from the left. Less common than LEFT JOIN, but good to know it exists.