cql:database_constraint/4

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Predicate database_constraint/4

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database_constraint(?Schema:atom, ?EntityName:atom, ?ConstraintName:atom, ?Constraint) is nondet[multifile, library(cql/cql)]

Constraint is one of:

primary_key(ColumnNames:list)
foreign_key(ForeignTableName:atom, ForeignColumnNames:list, ColumnNames:list)
unique(ColumnNames:list)
check(CheckClause)

In theory this can be autoconfigured too, but I have not written the code for it yet