PostgreSQL and Advanced SQL for API Development — PickAClass
⏱ 2h 48m 📚 28 lessons

PostgreSQL and Advanced SQL for API Development

Developers will learn how to design, query, and optimize relational databases using PostgreSQL to create robust, high-performance data backends for modern APIs.

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About this course

Are you a developer needing reliable, scalable data storage for your applications? PostgreSQL is the industry standard for powerful, flexible relational databases. This course provides the foundational knowledge needed to work with PostgreSQL effectively. You will move past basic SQL syntax to understand internal database mechanics, write complex queries, and ensure your data layer supports high-traffic API requirements. What you'll learn: * Understand core PostgreSQL architecture, including data storage, indexing, and transaction management principles. * Practice writing advanced SQL queries using JOINs, subqueries, and powerful window functions. * Analyze and optimize query performance using execution plans (EXPLAIN ANALYZE) to handle large datasets efficiently. * Apply modern PostgreSQL features like the JSONB data type for flexible schema design and efficient handling of document-style data. * Design robust database schemas and enforce data integrity using constraints, relationships, and locking mechanisms. The course begins with essential terminology and database setup, progresses through foundational SQL concepts, and concludes with advanced techniques for query optimization and performance tuning necessary for production-ready API backends. This course is designed for absolute beginners and developers new to PostgreSQL who need to integrate a powerful database into their application stack. No prior database experience is required. Start building scalable data infrastructure today.

What you'll get

  • 📜 Certificate of completion
    Add it to your LinkedIn profile
  • 💬 Personal AI tutor
    Stuck on a lesson? Ask your built-in tutor anything, any time.
  • ♾️ Lifetime access
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  • 📱 Phone or computer
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  • 💸 14-day refund
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  • Short & focused
    2h 48m of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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Certificate of Mastery
This certifies that
Name Surname
has successfully demonstrated mastery of
PostgreSQL and Advanced SQL for API Development
Skills demonstrated
Behavioral pattern analysis
Foundational
1.2 hrs
Decision-architecture frameworks
Proficient
1.4 hrs
A/B test design
Proficient
1.7 hrs
Behavioral copywriting
Advanced
1.9 hrs
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PickAClass — Name Surname
PostgreSQL and Advanced SQL for API Development
Page 2 of 2
Performance detail
Coursework summary
Lessons completed 14 / 14
Practice questions 26 / 28
Assignments submitted 4 (avg 4.5 / 5)
Capstone project Reviewed — 4.6 / 5
Total practice 6.2 hrs
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
Verify this credential
pickaclass.com/certificates/PCC-2026-X4F7-AP19
Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

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Frequently asked

What do I need to take this course? +

Just a phone or computer with internet. No installs, no special hardware.

How do I pay? +

By card via Stripe. We don’t store card details — Stripe handles them securely.

Can I get a refund? +

Yes — full refund within 14 days, no questions asked.

How long will I have access? +

Forever. Once you purchase, the course is yours to revisit anytime.

Will I get a certificate? +

Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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