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How would you model customer transaction data for both analytical and operational use cases?

General/Otherhard0.5 min readPremium
Frequency
Low
Asked at 1 company
Category
243
questions in General/Other
Difficulty Split
151E|43M|49H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
BCG
Key Concepts Tested
partitionsnowflakespark
Expert AnswerPremium
103 wordsInterview-ready
Hybrid model with clear separation of concerns. WHY: OLTP and analytics have opposing requirements—low-latency writes vs. analytical scans. OLTP: Normalized schema (customers, accounts, transactions) with indexes; event sourcing for auditability. Analytics: Denormalized star/snowflake—fact table (transaction_id, customer_id, product_id, amount, ts) + dimensions. Bridge via CDC....
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