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SQL

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SQL Tutorial - Full course for beginners

10:29

Learn SQL Programming - 1 - Intro to SQL

3:10:19

SQL Tutorial for Beginners [2019] - MySQL Tutorial

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SQL Tutorial - 9: Create Table Statement

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What is Database & SQL?

SQL is a domain-specific language used in programming and designed for managing data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS). It is particularly useful in handling structured data where there are relations between different entities/variables of the data. SQL offers two main advantages over older read/write APIs like ISAM or VSAM: first, it introduced the concept of accessing many records with one single command; and second, it eliminates the need to specify how to reach a record, e.g. with or without an index.