diff --git a/project/dalia/query/items/metadata/one_to_one_metadata.py b/project/dalia/query/items/metadata/one_to_one_metadata.py
index 0b4d3df71391bc5203e1a09addbfd7cedba08515..19161d0cf9b04a36dc2b5671b76bbe2ae2967502 100644
--- a/project/dalia/query/items/metadata/one_to_one_metadata.py
+++ b/project/dalia/query/items/metadata/one_to_one_metadata.py
@@ -37,7 +37,7 @@ def prepare_query_for_one_to_one_metadata_for_resources(resource_uri_refs: List[
         (var_lr, RDF.type, educor.EducationalResource),
         OPTIONAL((var_lr, DCTERMS.description, _VARIABLES["description"])),
         OPTIONAL((var_lr, DCTERMS.title, _VARIABLES["title"])),
-        OPTIONAL((var_lr, DCTERMS.created, _VARIABLES["created"])),
+        OPTIONAL((var_lr, SCHEMA.datePublished, _VARIABLES["created"])),
         OPTIONAL((var_lr, DCTERMS.license, _VARIABLES["license"])),
         OPTIONAL((var_lr, SCHEMA.fileSize, _VARIABLES["fileSize"])),
         OPTIONAL((var_lr, SCHEMA.url, _VARIABLES["url"])),
diff --git a/project/dalia/query/items/search/text_search_query.py b/project/dalia/query/items/search/text_search_query.py
index 04ec63729e89d6d747e150ddc2f0c092467d0a55..6dd6474896d5dbbf911eb017eab2601ab0afec2a 100644
--- a/project/dalia/query/items/search/text_search_query.py
+++ b/project/dalia/query/items/search/text_search_query.py
@@ -45,7 +45,7 @@ def prepare_where_for_text_search_for_learning_resources(
             (var_list, Jena_ARQ_list.member, var_s),
             (var_lr, SCHEMA.author, var_list),
             OPTIONAL(
-                (var_lr, DCTERMS.created, var_created)
+                (var_lr, SCHEMA.datePublished, var_created)
             )
         ),
         OPTIONAL(
@@ -54,7 +54,7 @@ def prepare_where_for_text_search_for_learning_resources(
             ),
             (var_s, RDF.type, educor.EducationalResource),
             OPTIONAL(
-                (var_s, DCTERMS.created, var_created)
+                (var_s, SCHEMA.datePublished, var_created)
             ),
             BIND(
                 var_s,
diff --git a/project/dalia/rdf/namespace/SCHEMA.py b/project/dalia/rdf/namespace/SCHEMA.py
index abe7c005b78b70107488539d8a2c9a88698883af..9a07494e6e84cc0b72cae258a91de925f1b07c32 100644
--- a/project/dalia/rdf/namespace/SCHEMA.py
+++ b/project/dalia/rdf/namespace/SCHEMA.py
@@ -7,6 +7,7 @@ NS = "https://schema.org/"
 
 # Properties
 author = URIRef(NS + "author")
+datePublished = URIRef(NS + "datePublished")
 familyName = URIRef(NS + "familyName")
 fileSize = URIRef(NS + "fileSize")
 givenName = URIRef(NS + "givenName")
diff --git a/tests/project/dalia/query/items/facets/test_existing_facet_items_in_database.py b/tests/project/dalia/query/items/facets/test_existing_facet_items_in_database.py
index 0b41c8bb4f029948f66c8a44c48cb0c5fea6a4be..e0dca0cdfa0f132ac1d647037438397087e29ab0 100644
--- a/tests/project/dalia/query/items/facets/test_existing_facet_items_in_database.py
+++ b/tests/project/dalia/query/items/facets/test_existing_facet_items_in_database.py
@@ -27,14 +27,14 @@ def test_prepare_query_for_getting_existing_facet_items_in_text_search_for_facet
         ?list <http://jena.apache.org/ARQ/list#member> ?s . 
         ?lr <https://schema.org/author> ?list . 
         OPTIONAL { 
-        ?lr <http://purl.org/dc/terms/created> ?created .
+        ?lr <https://schema.org/datePublished> ?created .
         } .
         } . 
         OPTIONAL { 
         FILTER ( !ISBLANK ( ?s ) ) . 
         ?s <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <https://github.com/tibonto/educor#EducationalResource> . 
         OPTIONAL { 
-        ?s <http://purl.org/dc/terms/created> ?created .
+        ?s <https://schema.org/datePublished> ?created .
         } . 
         BIND ( ?s AS ?lr ) .
         } . 
diff --git a/tests/project/dalia/query/items/metadata/test_one_to_one_metadata.py b/tests/project/dalia/query/items/metadata/test_one_to_one_metadata.py
index c4bb8bff47a3fc489caca9668844e48ea3647cc2..5a2bd62ab0c237431940a712a7d5097bcad966a0 100644
--- a/tests/project/dalia/query/items/metadata/test_one_to_one_metadata.py
+++ b/tests/project/dalia/query/items/metadata/test_one_to_one_metadata.py
@@ -27,7 +27,7 @@ def test_prepare_query_for_one_to_one_metadata_for_resources():
         ?lr <http://purl.org/dc/terms/title> ?title .
         } . 
         OPTIONAL { 
-        ?lr <http://purl.org/dc/terms/created> ?created .
+        ?lr <https://schema.org/datePublished> ?created .
         } . 
         OPTIONAL { 
         ?lr <http://purl.org/dc/terms/license> ?license .
diff --git a/tests/project/dalia/query/items/search/test_count.py b/tests/project/dalia/query/items/search/test_count.py
index ff5856a58eafc7c56a80fd63df0eb0f322508f13..93f8ac0b033a27538389734c2c34cb97782173f4 100644
--- a/tests/project/dalia/query/items/search/test_count.py
+++ b/tests/project/dalia/query/items/search/test_count.py
@@ -31,14 +31,14 @@ def test_prepare_query_for_count_in_text_search():
         ?list <http://jena.apache.org/ARQ/list#member> ?s . 
         ?lr <https://schema.org/author> ?list . 
         OPTIONAL { 
-        ?lr <http://purl.org/dc/terms/created> ?created .
+        ?lr <https://schema.org/datePublished> ?created .
         } .
         } . 
         OPTIONAL { 
         FILTER ( !ISBLANK ( ?s ) ) . 
         ?s <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <https://github.com/tibonto/educor#EducationalResource> . 
         OPTIONAL { 
-        ?s <http://purl.org/dc/terms/created> ?created .
+        ?s <https://schema.org/datePublished> ?created .
         } . 
         BIND ( ?s AS ?lr ) .
         } . 
@@ -66,14 +66,14 @@ def test_prepare_query_for_count_in_text_search_with_target_audience_facet():
         ?list <http://jena.apache.org/ARQ/list#member> ?s . 
         ?lr <https://schema.org/author> ?list . 
         OPTIONAL { 
-        ?lr <http://purl.org/dc/terms/created> ?created .
+        ?lr <https://schema.org/datePublished> ?created .
         } .
         } . 
         OPTIONAL { 
         FILTER ( !ISBLANK ( ?s ) ) . 
         ?s <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <https://github.com/tibonto/educor#EducationalResource> . 
         OPTIONAL { 
-        ?s <http://purl.org/dc/terms/created> ?created .
+        ?s <https://schema.org/datePublished> ?created .
         } . 
         BIND ( ?s AS ?lr ) .
         } . 
diff --git a/tests/project/dalia/query/items/search/test_text_search.py b/tests/project/dalia/query/items/search/test_text_search.py
index 93dc32b41c70b9ec40e3523b72db2ee8eef59222..84df0ade9c5ffc30c743ab8d4929ff8a0939753c 100644
--- a/tests/project/dalia/query/items/search/test_text_search.py
+++ b/tests/project/dalia/query/items/search/test_text_search.py
@@ -39,14 +39,14 @@ def test_prepare_query_for_text_search_for_learning_resources_order_by_relevance
         ?list <http://jena.apache.org/ARQ/list#member> ?s . 
         ?lr <https://schema.org/author> ?list . 
         OPTIONAL { 
-        ?lr <http://purl.org/dc/terms/created> ?created .
+        ?lr <https://schema.org/datePublished> ?created .
         } .
         } . 
         OPTIONAL { 
         FILTER ( !ISBLANK ( ?s ) ) . 
         ?s <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <https://github.com/tibonto/educor#EducationalResource> . 
         OPTIONAL { 
-        ?s <http://purl.org/dc/terms/created> ?created .
+        ?s <https://schema.org/datePublished> ?created .
         } . 
         BIND ( ?s AS ?lr ) .
         } . 
@@ -81,14 +81,14 @@ def test_prepare_query_for_text_search_for_learning_resources_order_by_created_d
         ?list <http://jena.apache.org/ARQ/list#member> ?s . 
         ?lr <https://schema.org/author> ?list . 
         OPTIONAL { 
-        ?lr <http://purl.org/dc/terms/created> ?created .
+        ?lr <https://schema.org/datePublished> ?created .
         } .
         } . 
         OPTIONAL { 
         FILTER ( !ISBLANK ( ?s ) ) . 
         ?s <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <https://github.com/tibonto/educor#EducationalResource> . 
         OPTIONAL { 
-        ?s <http://purl.org/dc/terms/created> ?created .
+        ?s <https://schema.org/datePublished> ?created .
         } . 
         BIND ( ?s AS ?lr ) .
         } . 
@@ -130,14 +130,14 @@ def test_prepare_query_for_text_search_for_learning_resources_order_by_relevance
         ?list <http://jena.apache.org/ARQ/list#member> ?s . 
         ?lr <https://schema.org/author> ?list . 
         OPTIONAL { 
-        ?lr <http://purl.org/dc/terms/created> ?created .
+        ?lr <https://schema.org/datePublished> ?created .
         } .
         } . 
         OPTIONAL { 
         FILTER ( !ISBLANK ( ?s ) ) . 
         ?s <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <https://github.com/tibonto/educor#EducationalResource> . 
         OPTIONAL { 
-        ?s <http://purl.org/dc/terms/created> ?created .
+        ?s <https://schema.org/datePublished> ?created .
         } . 
         BIND ( ?s AS ?lr ) .
         } . 
@@ -178,14 +178,14 @@ def test_prepare_query_for_text_search_for_learning_resources_order_by_created_a
         ?list <http://jena.apache.org/ARQ/list#member> ?s . 
         ?lr <https://schema.org/author> ?list . 
         OPTIONAL { 
-        ?lr <http://purl.org/dc/terms/created> ?created .
+        ?lr <https://schema.org/datePublished> ?created .
         } .
         } . 
         OPTIONAL { 
         FILTER ( !ISBLANK ( ?s ) ) . 
         ?s <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <https://github.com/tibonto/educor#EducationalResource> . 
         OPTIONAL { 
-        ?s <http://purl.org/dc/terms/created> ?created .
+        ?s <https://schema.org/datePublished> ?created .
         } . 
         BIND ( ?s AS ?lr ) .
         } .