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Difference between database and data warehouse.
written 6.4 years ago by | • modified 6.4 years ago |
Mumbai University > Computer Engineering > sem 8> data warehouse and mining
Marks: 5M
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written 6.4 years ago by | • modified 6.4 years ago |
Mumbai University > Computer Engineering > sem 8> data warehouse and mining
Marks: 5M
written 6.4 years ago by |
Database | Data warehouse | |
---|---|---|
IT is used for Online Transactional Processing (OLTP). | It is used for Online Analytical Processing (OLAP). | |
This can be used for other purposes such as Data Warehousing. | This reads the historical data for the Users for business decisions. | |
In a database the tables and joins are complex since they are normalized for RDMS. This reduces redundant data and saves storage space. | In data warehouse, the tables and joins are simple since they are de-normalized. This is done to reduce the response time for analytical queries. | |
Relational modeling techniques are used for RDMS database design. | Modeling techniques are used for the Data Warehouse design. | |
It is optimized for write operation. | It is optimized for read operations. | |
In a database, the performance is low for analysis queries. | In a data warehouse, there is high performance for analytical queries. | |
It includes rows and columns. | It includes a database in its structure. | . |