آزمون How is a data warehouse different from a database How are they similar Answer:
{"Image DocumentName": "\u0622\u0632\u0645\u0648\u0646 How is a data warehouse different from a database? How are they similar? Answer:", "Image ImageDescription": "Differences: A data warehouse is a repository of information collected from multiple sources, over a history of time, stored under a unified schema, and used for data analysis and decision support; whereas a database, is a collection of interrelated data that represents the current status of the stored data. There could be multiple heterogeneous databases where the schema of one database may not agree with the schema of another. A database system supports ad-hoc query and on-line transaction processing. Similarities: Both are repositories of information, storing huge amounts of persistent data.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}