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Q. |
A semijoin is which of the following? |
A. | Only the joining attributes are sent from one site to another and then all of the rows are returned. |
B. | All of the attributes are sent from one site to another and then only the required rows are returned. |
C. | Only the joining attributes are sent from one site to another and then only the required rows are return |
Answer» C. Only the joining attributes are sent from one site to another and then only the required rows are return |
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Advanced Database Management Systems (ADBMS)