Practice — CodeArena

Status	Title	Technology	Topic	Acceptance	Difficulty
○	7.Flatten nested JSON into a fact table	Python	Data modeling	—	Medium
○	21.Validate JSON records against a schema	Python	Data modeling	—	Easy
○	22.Merge overlapping time ranges	Python	Aggregation	—	Medium
○	23.Chunked aggregation over a large CSV	Python	Aggregation	—	Medium
○	24.Retry with exponential backoff	Python	Data modeling	—	Medium
○	25.Parse fixed-width log lines	Python	Data modeling	—	Easy
○	26.Pipeline task execution order	Python	Data modeling	—	Hard
○	27.Top K events in a stream	Python	Aggregation	—	Hard
○	53.Sessionize a clickstream in Python	Python	Sessionization	—	Medium