SQL


What is SQL?

Structured Query Language (SQL) is a highly popular domain specific language (DSL) used to communicate with relational database management systems (RDBMS). SQL is a standard that is based on the "relational model", defined by professor E.F. Codd, of IBM during the 1960's and 1970s. Codd defined both a relational algebra and a relational calculus as foundational models in his endeavor to reinvent database management systems. This led to his seminal 1970 paper "A Relational Model of Data for Large Shared Data Banks". Commonly used implementations of SQL include Oracle, IBM's DB2, Postgres, MySQL, and SQLite. Notably, SQLite is not a client/server system, but rather an embedded database that is used as a core application-level storage system in macOS, iOS, and Android. There has been much debate over what constitutes a "real" relational system, as some widely used database systems famously lacked features that Codd considered foundational to the relational model, such as "foreign keys". The flexibility of SQL has proven so powerful that many non-relational systems (e.g. Apache Spark) have implemented subsets or variants of the language to make it easier for people to draw upon their capabilities.

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Based on real Hired interview data, SQL developers in SF Bay Area earn an average annual salary of
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SQL Resources

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SQL Engineer Jobs

Business Systems Analyst
Business Systems Analyst
The ideal candidate must have experience in self-management, end-to-end project work, gathering requirements, gap analysis, SQL ...
About Brixton: Inspired by music, culture, and the people who surround them, Brixton is the collaboration of three friends who wanted to convey their lifestyle through unique products. Created in 2004, the time...
Business Systems Analyst
The ideal candidate must have experience in self-management, end-to-end project work, gathering requirements, gap analysis, SQL ...
About Brixton: Inspired by music, culture, and the people who surround them, Brixton is the collaboration of three friends who wanted to convey their lifestyle through unique products. Created in 2004, the time...
Data Scientist
Data Scientist
51-200 employees
About EDITED: EDITED supplies the world's leading fashion retailers with the retail analytics they need to have the right product at the right price, at the right time
Data Scientist
51-200 employees
Data Scientist
About EDITED: EDITED supplies the world's leading fashion retailers with the retail analytics they need to have the right product at the right price, at the right time
Data Engineer
Data Engineer
About Weight Watchers: Weight Watchers is even better. Start your path to losing weight and living healthier with the new Freestyle program. Plus get free recipes & tips.
Data Engineer
About Weight Watchers: Weight Watchers is even better. Start your path to losing weight and living healthier with the new Freestyle program. Plus get free recipes & tips.
Data Analyst
Data Analyst
Data Analyst
Data Integrity Analyst
Data Integrity Analyst
About Intacct Corporation: Financial management on your terms - Financial Management software from Sage Intacct instills confidence as you grow your business.
Data Integrity Analyst
About Intacct Corporation: Financial management on your terms - Financial Management software from Sage Intacct instills confidence as you grow your business.
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