cardinality
Elements in total
Cardinality is the number of elements in a set or group.
In mathematics, two sets have the same cardinality if their elements can be matched one-to-one—which allows comparison even of infinite sets.
In databases, cardinality describes either the number of rows in a table or the uniqueness of values in a column: a column with high cardinality has many distinct values.
Sequential listing of items
- tallyRecorded count
- totalComplete sum
- numberSymbol representing quantity
- quantityMeasurable amount present
sum · amount · census · tabulation · reckoning · tallying · numerosity · quantification
Number denoting position
- CantorSet theory founder
- subsetCollection within collection
- mappingDiagram of correspondences
- equivalenceState of being equal
one-to-one · correspondence · well-ordering · injection · isomorphism · pairing
Not able to enumerate
Single source, multiple targets
- many-to-manyPlural associations both directions
- one-to-oneExactly paired correspondence
- relationshipConnection between entities
- entityIndependent existing thing
schema · normalization · referential · join · table · records · uniqueness · constraints
Confined within limits
- countableAble to be tallied
- enumerableCapable of being counted
- discreteIndividually separate, unconnected
- limitedRestricted in extent
determinate · fixed · restricted · definite · numbered · measurable · terminable · constrained
enumeration
Sequential listing of items
quantity · sum · amount · census · tabulation · reckoning · tallying · numerosity · quantification · multiplicity
ordinal
Number denoting position
equivalence · one-to-one · correspondence · well-ordering · injection · isomorphism · pairing
uncountable
Not able to enumerate
omega · infinity · limitless · endless · inexhaustible
one-to-many
Single source, multiple targets
- many-to-manyPlural associations both directions
- one-to-oneExactly paired correspondence
- relationshipConnection between entities
entity · schema · normalization · referential · join · table · records · uniqueness · constraints · multiplicity
bounded
Confined within limits
- countableAble to be tallied
- enumerableCapable of being counted
- discreteIndividually separate, unconnected
limited · determinate · fixed · restricted · definite · numbered · measurable · terminable · constrained · listable
cardinalityordinality
Sequential position property
order · arrangement · sequence · ordering · permutation