DataLake Vs Datawarehouse

DataLakes and DataWarehouses are used to store data but they are not interchangeable. In simple words , datalakes store raw data  whereas the data warehouses store processed data (Cleansed, Filtered, Aggregated etc..). 

Key Differences 

Data Lake                    Vs       Datawarehouse
Raw Data                                 Processed Data
More Storage                            Storage is less comparable to Data Lake
Usage not yet determined          In Use
Date Scientist                           Business Professionals
Data Prep/ Additional Tools         Reports & Dashboards
needed
Not structured                         Structured and schema well defined

will be continued with example soon..