Verified Certificate

Supported by the following organizations

This is to certify that Sergey Safonov successfully completed and received a passing grade in DAT215.5x: Optimizing Performance for SQL Based Applications a course of study offered by Microsoft, an online learning initiative of Microsoft Corporation.

Noted by

Satya Nadella

Satya Nadella

Chief Executive Officer Microsoft Corporation

Karen Kocher

Karen Kocher

General Manager 21st Century Jobs, Skills and Employability Microsoft Corporation

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About edX Verified Certificates

An edX Verified Certificate signifies that the learner has agreed to abide by the edX honor code and completed all of the required tasks of this course under its guidelines, as well as having their photo ID checked to verify their identity.