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AWS - Interview Questions
What is the difference between Data Warehouse and Data Lake?
Data Warehouse Data Lake
Data is relational from transactional systems and operational databases. Data is both non-relational and relational from various sources such as IoT devices, mobile apps, websites, and social media.
Provides fastest query results at high cost of storage. Provides faster query results at low storage cost.
Used by Business analysts. Used by Data scientists, Data developers, and Business analysts.
Helps in Batch reporting, BI and visualizations Helps to perform various analytics such as Machine Learning, Predictive analytics, data discovery and profiling