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.

How much do SQL developers make?

We don't have enough data for Washington D.C.,
so we've calculated your salary information for the San Francisco Bay Area instead:
Based on real Hired interview data, SQL developers in Washington D.C. earn an average annual salary of
Based on real Hired interview data, SQL developers in SF Bay Area earn an average annual salary of
$128,087
The salaries of candidates in this role range from a low of $85,000 to a high of $200,000, with a median salary of $130,000.

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SQL Resources

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SQL Engineer Jobs

IT Business Analyst
IT Business Analyst
Candidate will be responsible for Business Analysis support of Starr Enterprise application systems. The level of support will vary by project and insurance product, but will include defining/docum...
IT Business Analyst
IT Business Analyst
Candidate will be responsible for Business Analysis support of Starr Enterprise application systems. The level of support will vary by project and insurance product, but will include defining/docum...
Senior Data Engineer
Senior Data Engineer
5001+ employees
Are you passionate about driving business & customer impact through thoughtful analysis and data-driven insights? Are you a deeply technical individual who enjoys working with customers to transfor...
About Amazon: Amazon is an electronic commerce and cloud computing company.
Senior Data Engineer
5001+ employees
Senior Data Engineer
Are you passionate about driving business & customer impact through thoughtful analysis and data-driven insights? Are you a deeply technical individual who enjoys working with customers to transfor...
About Amazon: Amazon is an electronic commerce and cloud computing company.
Presentation Associate - Monday -Friday 11:00 pm - 7:30 am
Presentation Associate - Monday -Friday 11:00 pm - 7:30 am
Position summary - Monday -Friday 11:00 pm - 7:30 am<br><br>* The Presentation Associate position is responsible for providing presentation services for our clients.<br><br>Job duties<br><br>(* den...
Presentation Associate - Monday -Friday 11:00 pm - 7:30 am
Presentation Associate - Monday -Friday 11:00 pm - 7:30 am
Position summary - Monday -Friday 11:00 pm - 7:30 am<br><br>* The Presentation Associate position is responsible for providing presentation services for our clients.<br><br>Job duties<br><br>(* den...
Data Engineer
Data Engineer
Please review the job details below.<br><br>Maxar Technologies is currently seeking a Data Scientist/Engineer to help us with a big data analytic engine that lives in Amazon Web Services (AWS) and ...
Data Engineer
Data Engineer
Please review the job details below.<br><br>Maxar Technologies is currently seeking a Data Scientist/Engineer to help us with a big data analytic engine that lives in Amazon Web Services (AWS) and ...
VP of Data
VP of Data
201-500 employees
We are Ro, a mission-driven healthcare technology company reinventing the way the healthcare system works. As the VP of Data, you will lead and build a diverse and talented team with expertise in d...
About Roman: Roman is a direct-to-consumer men's health company.
VP of Data
201-500 employees
VP of Data
We are Ro, a mission-driven healthcare technology company reinventing the way the healthcare system works. As the VP of Data, you will lead and build a diverse and talented team with expertise in d...
About Roman: Roman is a direct-to-consumer men's health company.
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