difference

Return a set that is the first set without elements of the remaining sets

index

Returns a map of the distinct values of ks in the xrel mapped to a set of the maps in xrel with the corresponding values...

intersection

Return a set that is the intersection of the input sets

join

When passed 2 rels, returns the rel corresponding to the natural join. When passed an additional keymap, joins on the co...

map-invert

Returns the map with the vals mapped to the keys.

project

Returns a rel of the elements of xrel with only the keys in ks

rename

Returns a rel of the maps in xrel with the keys in kmap renamed to the vals in kmap

rename-keys

Returns the map with the keys in kmap renamed to the vals in kmap

select

Returns a set of the elements for which pred is true

subset?

Is set1 a subset of set2?

superset?

Is set1 a superset of set2?

union

Return a set that is the union of the input sets