[Sea Quail]
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Question:
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A domain-specific language used in programming and designed for managing data held in a relational database management system, or for stream processing in a relational data stream management system.

Answer
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SQL

Flag:
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SQL

Original writeup (https://github.com/str0nkus/NeverlanCTF-2019-Writeups/tree/master/Trivia/Sea_Quail).