Read data from Azure Purview Knowledge Check Summary. Provide Service Principal Access to Azure Purview 5. Cardinality defines how many instances of one entity are related to instances of another entity. Module 10 - REST API Prerequisites Tools Introduction Objectives Table of Contents 1. On the Relationships tab, check information you want to show on the diagram. On the Database menu, point to Options, and then click Document. You can choose to show or hide information about relationships in your diagram. In databases, cardinality refers to the relationships between the data in two database tables. Show relationships and their properties in a diagram. The continuum hypothesis actually started out as the continuum conjecture, until it was shown to be consistent with the usual axioms of the real number system (by Kurt Gödel in 1940), and independent of those axioms (by Paul Cohen in 1963). It translates into the number of elements in a set.