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Relational (SQL) Category
ð Relational (SQL) Databases
Relational databases represent collection-based related tables that enforce primary schemas. Click any card below to view its syllabus and launch lessons.
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Lessons Available SQL (Core)
Universal standard query language for querying relational systems.
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Lessons Available PostgreSQL
Advanced open-source object-relational database. Active and growing rapidly.
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View Syllabus Oracle Database
Industry-dominant relational engine for large enterprise environments.
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View Syllabus MySQL
Most popular open-source transactional database powering the modern web.
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View Syllabus Microsoft SQL Server
Microsoft's enterprise data system, standard for Windows/.NET shops.
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View Syllabus MariaDB
Open-source transactional MySQL drop-in fork, built by MySQL's creators.
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View Syllabus SQLite
Most widely deployed embedded zero-config database in application files.
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View Syllabus IBM Db2
Mainframe and massive mainframe-compatible relational database standard.