May 16, 2012 · Could somebody explain to me, with the help of examples, what is cardinality in databases?

Aug 28, 2014 · High-cardinality - many tuples, low-cardinality - few tuples. While the Wikipedia article on Cardinality (SQL statements), defines it as follows: Cardinality refers to the uniqueness of data …

Apr 2, 2010 · What is cardinality in MySQL? Please explain in simple, non-technical language. If a index detail of any table displays the cardinality of a field say group_id as 11, then what does that mean?

Aug 3, 2010 · In database design what do n:m and 1:n mean? Does it have anything to do with keys or relationships?

May 7, 2022 · UML avoids the term cardinality preferring to use multiplicity. Often people with a data modeling background are surprised at this since cardinality has been so widely used in data …

Feb 11, 2018 · This is a simple query: select * from customers When I write this query in PL/SQL Developer and press F5, I see Explain Plan, but I don't know what are Cost, Cardinality and Bytes …

Oct 10, 2012 · 4 I understand what cardinality is, so please don't explain that ;-) I would like to know, what the purpose of doing cardinality is in data modeling, and why i should care. Example: In an ER …

Feb 24, 2011 · I am having a hard time understanding what is the difference between the Max and Min cardinalities when trying to design a database.

May 4, 2020 · Another approach to handling high-cardinality categorical variables is to use target encoding or mean encoding. This involves replacing each category with the average target value for …

Jul 18, 2018 · What is the cardinality of 0..1 to * associations Asked 7 years, 4 months ago Modified 7 years, 4 months ago Viewed 3k times