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Q. |
The following is true of three-tier data warehouses: |
A. | Once created, the data marts will keep on being updated from the data warehouseat periodic times |
B. | Once created, the data marts will directly receive their new data from the operational databases |
C. | The data marts are different groups of tables in the data warehouse |
D. | A data mart becomes a data warehouse when it reaches a critical size |
Answer» A. Once created, the data marts will keep on being updated from the data warehouseat periodic times |
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