Course Overview
SQL teaches students how to work with relational databases through Structured Query Language, the standard language for querying and managing structured data systems. Learners develop practical competency in database structure, querying, filtering, sorting, joins, aggregations, updates, schema design, and data management workflows used in professional database environments.
SQL Topics
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What Is SQL?
Introduction to SQL as the language used to interact with relational databases and structured data systems.
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Database Structure and Tables
Instruction in relational database concepts including tables, rows, columns, schemas, keys, and structured data organization.
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SELECT and Basic Querying
Practical instruction in retrieving data from databases using SELECT statements, column targeting, aliases, and basic output shaping.
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Filtering, Sorting, and Limiting
Training in WHERE clauses, ORDER BY, LIMIT, logical operators, and targeted result filtering.
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Joins and Relational Queries
Instruction in combining data across related tables using INNER JOIN, LEFT JOIN, RIGHT JOIN, and relational query logic.
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Aggregations and Grouping
Practical methods for summarizing data using COUNT, SUM, AVG, MIN, MAX, GROUP BY, and HAVING clauses.
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INSERT, UPDATE, and DELETE
Instruction in modifying database records through structured data insertion, updates, and deletion commands.
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Database Design and Best Practices
Guidance on schema planning, normalization basics, naming conventions, data integrity, and maintainable database design.