Мария Ситникова@mariyadance2004Follow BadgesProblem SolvingCPPSql CertificationsCertificate: SQL (Basic)VerifiedskillWork Experiencemariyadance2004 has not updated employment details yet.EducationPeter the Great St.Petersburg Polytechnic UniversityMathematics, BELinksmariyadance2004 has not updated links details yet. SkillsSQL