What are the main advantages and disadvantages of using relational databases?

Advantages of relational databases:

• Strict data structure: tables with clearly defined schemas ensure data integrity and predictability.
• Support for ACID transactions: guarantee reliability of data operations.
• Powerful SQL query language: allows flexible and efficient data retrieval and processing.
• Wide support and maturity: numerous tools, documentation, and experienced professionals.

Disadvantages:

• Scalability: more challenging to scale horizontally compared to NoSQL solutions.
• Schema flexibility: changing table structures can be complex and costly.
• Performance: may require optimization for large data volumes and complex queries.

An example of using a relational database is storing information about users and their orders in an online store, where data integrity and relationships between tables are important.