Chung, Won Hyuk has gained experience as a technical engineer, developer, and consultant at major tech companies such as Microsoft, Sequelo, and Dplus. Mr. Chung is one of Korea’s leading experts in database and Structured Quert Language (SQL), and serves as the head of top database consulting companies SQLroad and DPlus, advising many government agencies and businesses in data analysis and visualization. Mr. Chung is also exploring the new connectivity and expandability of DB by working on DB performance improvement, big data analysis and visualization, SQL, and PostgreSQL, a new open DB. He actively conducts provides lectures and consults on projects, and is available to assist companies in varying fields, including general IT, DB, BIG Data, and SQL.