Design a platform to support multiple types of online examinations, including SQL tests, logical reasoning, and other skill assessments.

• Develop core functionality for real-time validation of SQL queries submitted by candidates.
• User management: Admin and Candidate roles with distinct access controls and dashboards.
• Database and backend integration: Create a dynamic schema for storing user responses, scores, question metadata, and test logs.
• Export capabilities: Enable export of test results and detailed feedback reports.
• AI integration: Candidate assessment, role matching, and generate AI-based feedback after test completion.