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URL: https://www.coursera.org/learn/design--optimize-sql-database-schemas

⇱ Design & Optimize SQL Database Schemas | Coursera


Design & Optimize SQL Database Schemas

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Design & Optimize SQL Database Schemas

This course is part of multiple programs.

Included with

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Gain insight into a topic and learn the fundamentals.
Advanced level

Recommended experience

3 hours to complete
Flexible schedule
Learn at your own pace

Gain insight into a topic and learn the fundamentals.
Advanced level

Recommended experience

3 hours to complete
Flexible schedule
Learn at your own pace

What you'll learn

  • Denormalization boosts query speed but demands careful analysis of consistency risks and maintenance costs.

  • Partitioning and clustering strategies must align with actual query patterns and access methods to deliver meaningful performance gains.

  • ER diagrams serve as documentation and validation tools, enabling better communication and system understanding.

  • Schema optimization balances query performance, data integrity, storage efficiency, and maintenance complexity.

Details to know

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Recently updated!

February 2026

Assessments

6 assignmentsΒΉ

AI Graded see disclaimer
Taught in English

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  • Gain a foundational understanding of a subject or tool
  • Develop job-relevant skills with hands-on projects
  • Earn a shareable career certificate

There are 3 modules in this course

Most database schemas start simple, but as data grows and queries become complex, performance bottlenecks emerge.

What separates skilled data engineers from the rest is the ability to architect schemas that scale. This Short Course was created to help data engineers and database professionals accomplish advanced schema design and optimization that directly impacts query performance and system scalability. By completing this course, you'll be able to implement DDL partitioning and clustering strategies, make informed decisions about when to denormalize for performance gains, and create professional ER diagrams that communicate complex data relationships. These are the exact skills you'll use to optimize slow-running queries and design schemas that handle enterprise-scale workloads. By the end of this course, you will be able to: - Apply partitioning and clustering strategies using SQL Data Definition Language (DDL) - Analyze the trade-off between database normalization and query performance to propose schema refactoring - Create Entity-Relationship diagrams to model and document data structures This course is unique because it combines hands-on DDL implementation with strategic schema design decisions that directly address real-world performance challenges. To be successful in this project, you should have a solid foundation in SQL querying, basic database design principles, and experience working with relational databases.

Learners will implement advanced partitioning and clustering techniques using SQL DDL commands to optimize query performance for large-scale datasets.

What's included

2 videos1 reading2 assignments

2 videosβ€’Total 8 minutes
  • Why Database Performance Hits a Wall at Scaleβ€’2 minutes
  • Partitioning and Clustering Fundamentals for Performance Optimizationβ€’6 minutes
1 readingβ€’Total 12 minutes
  • DDL Syntax and Implementation Patterns for Partitioning and Clusteringβ€’12 minutes
2 assignmentsβ€’Total 21 minutes
  • Design and Implement a Partitioned Data Warehouse Tableβ€’18 minutes
  • Partitioning and Clustering Strategy Assessmentβ€’3 minutes

Learners will evaluate database normalization levels against query performance requirements to make strategic denormalization decisions for optimizing analytical workloads.

What's included

2 videos1 reading2 assignments

2 videosβ€’Total 12 minutes
  • Denormalization Strategies for Analytical Workloadsβ€’6 minutes
  • Analyzing Query Performance Impact of Normalization Levelsβ€’6 minutes
1 readingβ€’Total 12 minutes
  • Normalization Forms and Performance Impact Analysisβ€’12 minutes
2 assignmentsβ€’Total 23 minutes
  • Develop a Schema Refactoring Proposal with Performance Justificationβ€’20 minutes
  • Normalization vs Performance Trade-off Analysisβ€’3 minutes

Learners will design and document comprehensive Entity-Relationship diagrams that effectively communicate complex data structures and relationships for enterprise data systems.

What's included

3 videos1 reading2 assignments1 ungraded lab

3 videosβ€’Total 18 minutes
  • When Data Models Become Mission-Critical Communication Toolsβ€’3 minutes
  • Professional ER Diagram Design and Documentation Standardsβ€’6 minutes
  • Building Comprehensive ER Diagrams with Professional Toolsβ€’9 minutes
1 readingβ€’Total 12 minutes
  • ER Diagram Components and Advanced Modeling Techniquesβ€’12 minutes
2 assignmentsβ€’Total 18 minutes
  • Comprehensive ER Diagram Design and Documentation Assessment β€’15 minutes
  • ER Diagram Design Knowledge Checkβ€’3 minutes
1 ungraded labβ€’Total 18 minutes
  • Enterprise Data Modeling: Creating Comprehensive ER Diagrams for Complex Data Structuresβ€’18 minutes

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454 Coursesβ€’62,105 learners

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Frequently asked questions

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When you enroll in the course, you get access to all of the courses in the Specialization, and you earn a certificate when you complete the work. Your electronic Certificate will be added to your Accomplishments page - from there, you can print your Certificate or add it to your LinkedIn profile.

Yes. In select learning programs, you can apply for financial aid or a scholarship if you can’t afford the enrollment fee. If fin aid or scholarship is available for your learning program selection, you’ll find a link to apply on the description page.

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ΒΉ Some assignments in this course are AI-graded. For these assignments, your data will be used in accordance with Coursera's Privacy Notice.