Dynamodb_schema_update

[pritamps]

Updated Schema for Dynamo DB to mimic expected use case patterns for dynamo db.

Use cases

• Get student quiz report (SQR)
• Get all SQRs for student
• Get all SQRs for quiz
• Get all SQRs by batch

DynamoDB Schema

Partition key: session_id
Sort key: user_id#subject

Use cases

• Get student quiz report (SQR): Query by partition key and sort key
• Get all SQRs for student: begins_with(user_id)
• Get all SQRs for quiz: Query by partition key
• Get all SQRs for batch: Get all SQRs for quiz and then filter by batch