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What is cardinality?
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Answer / ramki
cardinality refers to the uniqueness of data values in the
particular column of database table.
| Is This Answer Correct ? | 1 Yes | 0 No |
It refers to uniqueness of data contained in a column...
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Answer / cherie
In Oracle/PLSQL, the cardinality function returns the
number of elements in a nested table.
The syntax for the cardinality function is:
cardinality( nested table column )
nested table column is the column in the nested table that
you wish to return the cardinality for.
Note:
If the nested table is empty, the cardinality function will
return NULL.
If the nested table is a null collection, the cardinality
function will return NULL.
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / suresh.somayajula
it is nothing but collection of tuples in a relation or
collection of attributes in a relation .
| Is This Answer Correct ? | 0 Yes | 3 No |
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