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Suppose that you need to update one value of the column SalesCost in a relation. The way the ...
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Suppose that you need to update one value of the column SalesCost in a relation. The way the ...
Suppose that you need to update one value of the column SalesCost in a relation. The way the relation is constructed, this value needs to be changed in three different rows. However, you only change the value in two of the rows. You have just created a(n) ________.
• normalization anomaly
• insertion anomaly
• update anomaly
• deletion anomaly
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Database Processing: Fundamentals, Design, and Implementation
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Kroenke, Auer, Yoder, Vandenberg
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update anomaly
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In order to update data in SQL, one must inform the DBMS which relation, columns and rows are involv
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One property of a relation is that entries in a given column are from the same set of values.
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Which of the following is not a true statement regarding a relation?
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You can use the existing value in a column and a calculation to update a value.
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When necessary, include a WHERE clause into the UPDATE command to indicate the column on which the ...
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Which of the following commands changes the value in a column?
The column to be updated by the UPDATE command is specified in the ____ clause.
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The SET clause of the UPDATE command is used to identify the column(s) being updated.
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