Author: a3nm <>
Date: Sun, 17 Jun 2018 01:37:33 +0200
1 file changed, 4 insertions(+), 0 deletions(-)
diff --git a/Queries.page b/Queries.page
@@ -22,6 +22,10 @@ We can usually rewrite CQs and UCQs to disallow constants, at the expense of cha
Many restrictions of CQs and UCQs have been designed in order to ensure the tractability of the [query evaluation]() task; check this article for such definitions.
+## Relational algebra
+Another way to express queries is via the [relational algebra]().