What do you know about databases, and how have you worked with them?

Databases are systems for storing, organizing, and managing data. I have worked with relational databases (e.g., MySQL, PostgreSQL) and understand the basic concepts: tables, relationships, indexes, transactions.

In my work, I:

• Created and optimized SQL queries for data retrieval and updates.
• Designed database structures considering requirements and normalization.
• Used ORM (e.g., Hibernate) for application interaction with the database.
• Analyzed query performance and optimized them.
• Worked with database schema migrations to support changes.

For example, during requirements analysis, I helped determine what data and relationships are needed to ensure correct data storage and efficient access.