Can you explain what is meant by a transaction in PostgreSQL and how it works?

Career goals related to growth and skill development may include:

• Deepening knowledge in Java and related technologies (Spring, Hibernate, microservices).
• Mastering new tools and development methodologies such as DevOps, CI/CD.
• Developing skills in application architecture design and design patterns.
• Improving teamwork and communication skills.
• Obtaining certifications and participating in industry conferences.

For example, setting a goal to become a middle developer with a good understanding of backend development and the ability to independently lead small projects, then moving towards a senior level with a focus on architecture and mentoring.