diff --git a/config.toml b/config.toml
index 4433e0f..4f2d033 100644
--- a/config.toml
+++ b/config.toml
@@ -47,6 +47,7 @@ menu_items = [
 	{url = "$BASE_URL/tags", name = "Tags (EN)"},
 	{url = "$BASE_URL/pt/tags", name = "Tags (PT)"},
 	{url = "$BASE_URL/quotes", name = "Quotes"},
+	{url = "$BASE_URL/research", name = "Research Notes"},
 ]
 after_dark_title = "JulioBiason.Net 4.1"
 enable_post_view_navigation = false
diff --git a/content/research/psql.md b/content/research/psql.md
index a1c0166..0e1b9bc 100644
--- a/content/research/psql.md
+++ b/content/research/psql.md
@@ -1,9 +1,31 @@
 +++
 title = "psql"
 weight = 112
+
+[taxonomies]
+tags = ["research", "postgresql", "psql", "database", "schema", "table"]
 +++
 
-- [Show databases](@/research/psql/show-database.md)
-- [Use database](@/research/psql/use-database.md)
-- [Show schemas](@/research/psql/show-schemas.md)
-- [Show tables](@/research/psql/show-tables.md)
+## Show Database
+
+```
+\l
+```
+
+## Use Database
+
+```
+\c [database_name]
+```
+
+## Show Schemas
+
+```
+\dn
+```
+
+## Show Tables
+
+```
+\dt
+```
diff --git a/content/research/psql/show-database.md b/content/research/psql/show-database.md
deleted file mode 100644
index 5d20eaa..0000000
--- a/content/research/psql/show-database.md
+++ /dev/null
@@ -1,10 +0,0 @@
-+++
-title = "PSQL: Show database"
-
-[taxonomies]
-tags = ["research", "postgresql", "psql", "database"]
-+++
-
-```
-\dt
-```
diff --git a/content/research/psql/show-schemas.md b/content/research/psql/show-schemas.md
deleted file mode 100644
index 7d19902..0000000
--- a/content/research/psql/show-schemas.md
+++ /dev/null
@@ -1,10 +0,0 @@
-+++
-title = "PSQL: Show Schemas"
-
-[taxonomies]
-tags = ["research", "postgresql", "psql", "schemas"]
-+++
-
-```
-\dn
-```
diff --git a/content/research/psql/show-tables.md b/content/research/psql/show-tables.md
deleted file mode 100644
index 7d5e253..0000000
--- a/content/research/psql/show-tables.md
+++ /dev/null
@@ -1,10 +0,0 @@
-+++
-title = "PSQL: Show Tables"
-
-[taxonomies]
-tags = ["research", "postgresql", "psql", "tables"]
-+++
-
-```
-\dt
-```
diff --git a/content/research/psql/use-database.md b/content/research/psql/use-database.md
deleted file mode 100644
index 6950659..0000000
--- a/content/research/psql/use-database.md
+++ /dev/null
@@ -1,10 +0,0 @@
-+++
-title = "PSQL: Use Database"
-
-[taxonomies]
-tags = ["research", "postgresql", "psql", "database"]
-+++
-
-```
-\c [database_name]
-```