HCLTech Interview Question: Data Modeling and Database Design: Explain the difference between OLTP and OLAP databases. How do you design a data warehouse? What are the key components? What are the different types of schemas in data warehousing (e.g., star schema, snowflake schema)?

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Data Modeling and Database Design: Explain the difference between OLTP and OLAP databases. How do you design a data warehouse? What are the key components? What are the different types of schemas in data warehousing (e.g., star schema, snowflake schema)?

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