# After the Lock

**Category:** Database

**Points:** 150

## Description

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\<sup>Created By: \<code>@syyntax\</code>\</sup>
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Once a clinical trial's database is locked, results are frozen — any edit after the data-lock date is a protocol violation and a fingerprint of tampering. Aurora Health recorded the official lock date for the Veltrexa study right in the studies table. Find the subject whose primary efficacy result (measure = 'primary_efficacy_delta') was modified after the study's data-lock date, and report their subject code.

Use the provided MySQL shell.

Submit the subject code as `deadface{subject_code}`. Example: `deadface{ABCD-0101}`.

[Access Database](https://aurora.dctf.io)

## Services

- [https://deadface.sfo3.cdn.digitaloceanspaces.com](https://deadface.sfo3.cdn.digitaloceanspaces.com)
- [https://aurora.dctf.io)](https://aurora.dctf.io))