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
$131,584
The salaries of candidates in this role range from a low of $60,000 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

Test & Data Infrastructure Lead
Test & Data Infrastructure Lead
Test & Data Infrastructure Lead Facebook Reality Labs | Redmond, WA<br><br>Facebook's Augmented Reality (AR) team is driving the state of the art forward with breakthrough work in computer vision, ...
Test & Data Infrastructure Lead
Test & Data Infrastructure Lead
Test & Data Infrastructure Lead Facebook Reality Labs | Redmond, WA<br><br>Facebook's Augmented Reality (AR) team is driving the state of the art forward with breakthrough work in computer vision, ...
Database Engineer
Database Engineer
About Foundation Medicine:<br><br>Foundation Medicine began with an ideato simplify the complex nature of cancer genomics, bringing cutting-edge science and technology to everyday cancer care. Our ...
Database Engineer
Database Engineer
About Foundation Medicine:<br><br>Foundation Medicine began with an ideato simplify the complex nature of cancer genomics, bringing cutting-edge science and technology to everyday cancer care. Our ...
Senior PACS Admin Analyst
Senior PACS Admin Analyst
EvergreenHealth is looking for a Senior PACS Admin Analyst working full-time in our Information Technology department located in Kirkland, Washington.<br><br>EvergreenHealth is an integrated two-ho...
Senior PACS Admin Analyst
Senior PACS Admin Analyst
EvergreenHealth is looking for a Senior PACS Admin Analyst working full-time in our Information Technology department located in Kirkland, Washington.<br><br>EvergreenHealth is an integrated two-ho...
Data Scientist Trainee, Mid
Data Scientist Trainee, Mid
Data Scientist Trainee, Mid<br><br>The Challenge:<br><br>Are you excited at the prospect of unlocking the secrets held by a data set? Are you fascinated by the possibilities presented by the IoT, m...
Data Scientist Trainee, Mid
Data Scientist Trainee, Mid
Data Scientist Trainee, Mid<br><br>The Challenge:<br><br>Are you excited at the prospect of unlocking the secrets held by a data set? Are you fascinated by the possibilities presented by the IoT, m...
Application Support Analyst
Application Support Analyst
Overview<br><br>Analysis Group is one of the largest economics consulting firms, with more than 950 professionals across 14 offices in North America, Europe, and Asia. Since 1981, we have provided ...
Application Support Analyst
Application Support Analyst
Overview<br><br>Analysis Group is one of the largest economics consulting firms, with more than 950 professionals across 14 offices in North America, Europe, and Asia. Since 1981, we have provided ...
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