diff --git a/src/EFCore.Relational/Extensions/RelationalEntityTypeExtensions.cs b/src/EFCore.Relational/Extensions/RelationalEntityTypeExtensions.cs
index 7b7ca39ac61..1f349709a59 100644
--- a/src/EFCore.Relational/Extensions/RelationalEntityTypeExtensions.cs
+++ b/src/EFCore.Relational/Extensions/RelationalEntityTypeExtensions.cs
@@ -1518,7 +1518,13 @@ public static void SetIsTableExcludedFromMigrations(
     ///     Gets the mapping strategy for the derived types.
     /// </summary>
     /// <param name="entityType">The entity type.</param>
-    /// <returns>The mapping strategy for the derived types.</returns>
+    /// <returns>
+    ///     The mapping strategy for the derived types, or <see langword="null" /> if no strategy is configured
+    ///     and the entity type has no derived types. Well-known values include
+    ///     <see cref="RelationalAnnotationNames.TphMappingStrategy" />,
+    ///     <see cref="RelationalAnnotationNames.TptMappingStrategy" />, and
+    ///     <see cref="RelationalAnnotationNames.TpcMappingStrategy" />, but other values may be returned if configured.
+    /// </returns>
     public static string? GetMappingStrategy(this IReadOnlyEntityType entityType)
         => (string?)entityType[RelationalAnnotationNames.MappingStrategy]
             ?? (entityType.BaseType != null
diff --git a/src/EFCore.Relational/Extensions/RelationalTypeBaseExtensions.cs b/src/EFCore.Relational/Extensions/RelationalTypeBaseExtensions.cs
index 89b67725b3a..ecf8df98a07 100644
--- a/src/EFCore.Relational/Extensions/RelationalTypeBaseExtensions.cs
+++ b/src/EFCore.Relational/Extensions/RelationalTypeBaseExtensions.cs
@@ -350,7 +350,14 @@ public static IEnumerable<IEntityTypeMappingFragment> GetMappingFragments(
     ///     Gets the mapping strategy for the derived types.
     /// </summary>
     /// <param name="typeBase">The type.</param>
-    /// <returns>The mapping strategy for the derived types.</returns>
+    /// <returns>
+    ///     The mapping strategy for the derived types, or <see langword="null" /> if no strategy is configured
+    ///     and the entity type has no derived types. Well-known values are
+    ///     <see cref="RelationalAnnotationNames.TphMappingStrategy" />,
+    ///     <see cref="RelationalAnnotationNames.TptMappingStrategy" />, and
+    ///     <see cref="RelationalAnnotationNames.TpcMappingStrategy" />, but other values may be returned
+    ///     if a different mapping strategy has been configured.
+    /// </returns>
     public static string? GetMappingStrategy(this IReadOnlyTypeBase typeBase)
         => typeBase.ContainingEntityType.GetMappingStrategy();