CST363: Learning Journal Week 4

5 Key Points from Introductory SQL


1. SQL Syntax: Learned how to write basic SQL queries to retrieve data from databases using SELECT statements.

2. Filtering Data: Explored the WHERE clause to filter data based on specific conditions.

3. Sorting Results: Learned how to sort query results using the ORDER BY clause.

4. Aggregate Functions: Studied aggregate functions like COUNT, SUM, AVG, MIN, and MAX to perform calculations on data.

5. Joins: Understood different types of joins (e.g., INNER JOIN, LEFT JOIN, RIGHT JOIN) to combine data from multiple tables.


Questions about databases:

1. What are the best practices for database design to ensure efficiency and scalability?

2. How does indexing work in databases, and when should it be used?

3. What are some common security measures to protect databases from unauthorized access and data breaches?

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