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
$134,715
The salaries of candidates in this role range from a low of $55,000 to a high of $250,000, with a median salary of $135,000.

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SQL Resources

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SQL Engineer Jobs

Network Contol Analyst
Network Contol Analyst
5001+ employees
Role Summary:<br><br>* For State Street's Network Support Center will provide SEV "1" critical and SEV "2" urgent incident management with immediate response, real-time remediation, escalation and ...
About State Street: State Street is a financial holding company providing a range of products and services for large pools of investment assets.
Network Contol Analyst
5001+ employees
Network Contol Analyst
Role Summary:<br><br>* For State Street's Network Support Center will provide SEV "1" critical and SEV "2" urgent incident management with immediate response, real-time remediation, escalation and ...
About State Street: State Street is a financial holding company providing a range of products and services for large pools of investment assets.
Security Administrator - eDiscovery & Forensics
Security Administrator - eDiscovery & Forensics
The Security Administrator reports to the Manager of eDiscovery and Forensics team, and is a member of a larger Security Engineering and Operations (SecOps) organization that designs, deploys and o...
Security Administrator - eDiscovery & Forensics
Security Administrator - eDiscovery & Forensics
The Security Administrator reports to the Manager of eDiscovery and Forensics team, and is a member of a larger Security Engineering and Operations (SecOps) organization that designs, deploys and o...
Data Visualization Engineer
Data Visualization Engineer
Project Description<br><br>Luxoft is seeking an Analytics and Visualization Engineer who will be seen as a SME around all things front-end. This role will work with stakeholders to develop and buil...
Data Visualization Engineer
Data Visualization Engineer
Project Description<br><br>Luxoft is seeking an Analytics and Visualization Engineer who will be seen as a SME around all things front-end. This role will work with stakeholders to develop and buil...
Data Analyst III
Data Analyst III
Data Analyst III<br><br>Location: Redwood City, CA<br><br>Duration: 1 year<br><br>Description:<br><br>* Triage and resolve user issues. Perform SQL analysis on trickier issues in order to assist en...
Data Analyst III
Data Analyst III
Data Analyst III<br><br>Location: Redwood City, CA<br><br>Duration: 1 year<br><br>Description:<br><br>* Triage and resolve user issues. Perform SQL analysis on trickier issues in order to assist en...
Senior Data Scientist
Senior Data Scientist
1501-5000 employees
At Fitbit, our mission is to help people lead healthier, more active lives by empowering them with data, inspiration and guidance to reach their goals.<br><br>We started our journey in 2007-as a te...
About Fitbit: Fitbit is a company providing wearable devices with software and services that help users reach their health and fitness goals.
Senior Data Scientist
1501-5000 employees
Senior Data Scientist
At Fitbit, our mission is to help people lead healthier, more active lives by empowering them with data, inspiration and guidance to reach their goals.<br><br>We started our journey in 2007-as a te...
About Fitbit: Fitbit is a company providing wearable devices with software and services that help users reach their health and fitness goals.
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