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प्रश्न
A table 'game1' has 3 columns and 20 rows and another table 'game2' has the same column as game1 (ie 3) and 15 rows. 5 rows are common in both the table. If we take union, what is the degree and cardinality of the resultant table?
संख्यात्मक
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उत्तर
Degree: Both tables have 3 columns, so the union has degree 3.
Cardinality: Duplicate rows are removed.
[20 + 15 − 5 = 30]
Final answer: Degree = 3; Cardinality = 30.
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