Top "Cardinality" questions

In data modeling, the cardinality of one data table with respect to another data table is a critical aspect of database design.

What is cardinality in Databases?

I have been searching all over the internet but I couldn't seem to find an answer that I can understand. …

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Is it possible to determine the number of elements of a c++ enum class?

Is it possible to determine the cardinality of a c++ enum class: enum class Example { A, B, C, D, E }; …

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What is the difference between Max Cardinality and Min Cardinality?

I am having a hard time understanding what is the difference between the Max and Min cardinalities when trying to …

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What is the definition of cardinality in SQL

My school book Database Systems defines cardinality as follows: The cardinality of a relation is the number of tuples it …

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MS Visio 2007: How do I get the cardinality to appear on both ends of a relationship?

In Visio 2007, I can only seem to set the cardinality of the Parent-to-child relationship, but I want to set the …

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Does it make sense to use an index that will have a low cardinality?

I'm mainly an Actionscript developer and by no means an expert in SQL, but from time to time I have …

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How to *really* write UML cardinalities?

I would like to know once and for all how to write UML cardinalities, since I very often had to …

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Why does the cardinality of an index in MySQL remain unchanged when I add a new index?

I have added a FULLTEXT index to one of my MySQL database tables as follows: ALTER TABLE members ADD FULLTEXT(…

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How do I add multiplicity values in StarUML

I am studying Database Development and I am at the stage where I have to create my own ER Models. …

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MySQL index cardinality - performance vs storage efficiency

Say you have a MySQL 5.0 MyISAM table with 100 million rows, with one index (other than primary key) on two integer …

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