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- W1212988886 abstract "ETL (Extraction-Transformation-Loading) process is responsible for extracting data from several sources, cleansing, transforming, integrating and loading into a data warehouse. Extraction process accesses large amount of data by executing several complex queries in source databases. These queries are repetitive and executed at regular interval to refresh the data warehouse. Extraction of data from source must be completed in a certain time window; hence it is necessary to optimize its execution time. In this paper, we delve into the optimization of queries by recommending indices which reduces cost of the queries and improves performance of the queries." @default.
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- W1212988886 date "2015-06-24" @default.
- W1212988886 modified "2023-09-23" @default.
- W1212988886 title "Query Optimizer for the ETL Process in Data Warehouses" @default.
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- W1212988886 doi "https://doi.org/10.32628/ijsrset151375" @default.
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