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106年

第 4 題

2.5 分

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Which of the following about relational databases is wrong?

a.the model organizes data into one or more tables of columns and rowsb.a row in a table corresponds to a record of datac.a primary key uniquely identifies each record in a tabled.a foreign key in one table corresponds to a primary key in another tablee.all of the above are correct (choose this only if none of the above can be chosen).