Qingqing Zheng@qingqingFollow BadgesProblem SolvingSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: SQL (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillWork Experienceqingqing has not updated employment details yet.EducationUniversity of Souther CaliforniaLinksqingqing has not updated links details yet. Skillsqingqing has not updated skills details yet.