Ducheng Jin@djin1Follow BadgesPythonSql CertificationsCertificate: SQL (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillWork Experiencedjin1 has not updated employment details yet.Educationdjin1 has not updated education details yet.Linksdjin1 has not updated links details yet. Skillsdjin1 has not updated skills details yet.