PostgreSQL & SQL Assessment: Mastering Advanced Queries, Performance Tuning, and Stored Procedures
Sub Category
- IT Certifications
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Objectives
- Successfully pass technical screening interviews focused on PostgreSQL core development skills.
- Analyze and optimize complex SQL queries using advanced techniques like window functions and CTEs.
- Interpret EXPLAIN ANALYZE output to diagnose performance bottlenecks accurately.
- Design and implement appropriate indexing strategies (B-tree, Hash, GIN, GiST) for various workloads.
- Write robust, efficient, and secure stored procedures, functions, and triggers using PL/pgSQL.
- Demonstrate a deep understanding of PostgreSQL transaction management, concurrency, and locking.
- Evaluate real-world data modeling scenarios and select optimal schema designs.
- Configure key PostgreSQL settings (e.g., memory, caching) to improve overall server performance.
- Solve challenging assessment problems covering data aggregation, recursion, and lateral joins.
- Understand common pitfalls and anti-patterns encountered during large-scale PostgreSQL development.
- Articulate the differences between various isolation levels and their impact on application behavior.
- Apply advanced filtering techniques using JSONB operators and full-text search capabilities.
Pre Requisites
- Solid intermediate knowledge of standard SQL syntax (SELECT, INSERT, UPDATE, DELETE, JOINs).
- Familiarity with relational database concepts and schema design principles.
- Access to a working PostgreSQL environment (version 12+) or psql/pgAdmin tool.
- Experience using common development tools for database interaction.
FAQ
- Q. How long do I have access to the course materials?
- A. You can view and review the lecture materials indefinitely, like an on-demand channel.
- Q. Can I take my courses with me wherever I go?
- A. Definitely! If you have an internet connection, courses on Udemy are available on any device at any time. If you don't have an internet connection, some instructors also let their students download course lectures. That's up to the instructor though, so make sure you get on their good side!
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