Oracle & SQL Server
The enterprise relational databases used across large organisations.
Beginner
Start here. No background needed beyond school maths.
Oracle Database Documentation
••••'s official manuals, from the concepts guide to SQL language reference, for the database most large Indian enterprises run.
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Oracle Dev Gym
Free quizzes, workouts and classes on SQL and PL/SQL from ••••'s own developer advocates.
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Oracle Live SQL
A free browser sandbox to run •••• SQL and PL/SQL scripts and try tutorials, with no database to install.
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SQL Server Documentation
••••'s guides for SQL Server: installing, designing databases, security and performance.
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Transact-SQL Reference
The language reference for T-SQL, the SQL dialect of SQL Server and Azure SQL, with syntax and examples for each statement.
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