diff --git a/src/Database/Adapter/MongoDB.php b/src/Database/Adapter/MongoDB.php
index 9ee6398ff..c283bc0fe 100644
--- a/src/Database/Adapter/MongoDB.php
+++ b/src/Database/Adapter/MongoDB.php
@@ -107,10 +107,19 @@ public function createCollection(string $name, array $attributes = [], array $in
 
         $collection = $database->$id;
 
-        // Mongo creates an index for _id; _uid and _read index by default
+        // Mongo creates an index for _id; _uid (unique, case insensitive) and _read index by default
         // Returns the name of the created index as a string.
-        // Update $this->getIndexCount when adding another default index
-        $uid = $collection->createIndex(['_uid' => $this->getOrder(Database::ORDER_DESC)], ['name' => '_uid', 'unique' => true]);
+        $uid = $collection->createIndex([
+            '_uid' => $this->getOrder(Database::ORDER_DESC)],
+            [
+                'name' => '_uid',
+                'unique' => true,
+                'collation' => [ // https://docs.mongodb.com/manual/core/index-case-insensitive/#create-a-case-insensitive-index
+                    'locale' => 'en',
+                    'strength' => 1
+                ],
+            ]
+        );
         $read = $collection->createIndex(['_read' => $this->getOrder(Database::ORDER_DESC)], ['name' => '_read_permissions']);
 
 
diff --git a/src/Database/Database.php b/src/Database/Database.php
index e1ad29ccb..f930623b6 100644
--- a/src/Database/Database.php
+++ b/src/Database/Database.php
@@ -6,6 +6,7 @@
 use Utopia\Database\Validator\Authorization;
 use Utopia\Database\Validator\Structure;
 use Utopia\Database\Exception\Authorization as AuthorizationException;
+use Utopia\Database\Exception\Duplicate as DuplicateException;
 use Utopia\Database\Exception\Limit as LimitException;
 use Utopia\Database\Exception\Structure as StructureException;
 use Utopia\Cache\Cache;
@@ -394,6 +395,14 @@ public function createAttribute(string $collection, string $id, string $type, in
     {
         $collection = $this->getCollection($collection);
 
+        // attribute IDs are case insensitive
+        $attributes = $collection->getAttribute('attributes', []); /** @var Document[] $attributes */
+        foreach ($attributes as $attribute) {
+            if (\strtolower($attribute->getId()) === \strtolower($id)) {
+                throw new DuplicateException('Attribute already exists');
+            }
+        }
+
         if ($this->adapter->getAttributeLimit() > 0 && 
             $this->adapter->getAttributeCount($collection, true) >= $this->adapter->getAttributeLimit())
         {
@@ -531,6 +540,23 @@ public function addAttributeInQueue(string $collection, string $id, string $type
     {
         $collection = $this->getCollection($collection);
 
+        /** @var Document[] $attributes */
+        /** @var Document[] $attributesInQueue */
+        $attributes = $collection->getAttribute('attributes');
+        $attributesInQueue = $collection->getAttribute('attributesInQueue');
+
+        foreach ($attributes as $attribute) {
+            if (\strtolower($attribute->getId()) === \strtolower($id)) {
+                throw new DuplicateException('Attribute already exists');
+            }
+        }
+
+        foreach ($attributesInQueue as $attribute) {
+            if (\strtolower($attribute->getId()) === \strtolower($id)) {
+                throw new DuplicateException('Attribute already exists in queue');
+            }
+        }
+
         if ($format) {
             $name = \json_decode($format, true)['name'];
             if (!Structure::hasFormat(json_decode($format, true)['name'], $type)) {
@@ -618,6 +644,14 @@ public function createIndex(string $collection, string $id, string $type, array
 
         $collection = $this->getCollection($collection);
 
+        // index IDs are case insensitive
+        $indexes = $collection->getAttribute('indexes', []); /** @var Document[] $indexes */
+        foreach ($indexes as $index) {
+            if (\strtolower($index->getId()) === \strtolower($id)) {
+                throw new DuplicateException('Index already exists');
+            }
+        }
+
         if ($this->adapter->getIndexCount($collection, true) >= $this->adapter->getIndexLimit()) {
             throw new LimitException('Index limit reached. Cannot create new index.');
         }
@@ -710,6 +744,22 @@ public function addIndexInQueue(string $collection, string $id, string $type, ar
 
         $collection = $this->getCollection($collection);
 
+        // index IDs are case insensitive
+        $indexes = $collection->getAttribute('indexes', []); /** @var Document[] $indexes */
+        $indexesInQueue = $collection->getAttribute('indexesInQueue', []); /** @var Document[] $indexesInQueue */
+
+        foreach ($indexes as $index) {
+            if (\strtolower($index->getId()) === \strtolower($id)) {
+                throw new DuplicateException('Index already exists');
+            }
+        }
+
+        foreach ($indexesInQueue as $index) {
+            if (\strtolower($index->getId()) === \strtolower($id)) {
+                throw new DuplicateException('Index already exists in queue');
+            }
+        }
+
         $collection->setAttribute('indexesInQueue', new Document([
             '$id' => $id,
             'type' => $type,
diff --git a/tests/Database/Base.php b/tests/Database/Base.php
index a9bb80a9a..7966f191f 100644
--- a/tests/Database/Base.php
+++ b/tests/Database/Base.php
@@ -8,7 +8,7 @@
 use Utopia\Database\Database;
 use Utopia\Database\Document;
 use Utopia\Database\Exception\Authorization as ExceptionAuthorization;
-use Utopia\Database\Exception\Duplicate;
+use Utopia\Database\Exception\Duplicate as DuplicateException;
 use Utopia\Database\Exception\Limit as LimitException;
 use Utopia\Database\Query;
 use Utopia\Database\Validator\Authorization;
@@ -190,12 +190,54 @@ public function testInvalidDefaultValues($type, $default)
         $this->assertEquals(false, static::getDatabase()->createAttribute('attributes', 'bad_default', $type, 256, true, $default));
     }
 
+    /**
+     * @depends testInvalidDefaultValues
+     */
+    public function testAttributeCaseInsensitivity()
+    {
+        $this->assertEquals(true, static::getDatabase()->createAttribute('attributes', 'caseSensitive', Database::VAR_STRING, 128, true));
+        $this->expectException(DuplicateException::class);
+        $this->assertEquals(true, static::getDatabase()->createAttribute('attributes', 'CaseSensitive', Database::VAR_STRING, 128, true));
+    }
+
+    /**
+     * @depends testAttributeCaseInsensitivity
+     */
+    public function testAttributeQueueCaseInsensitivity()
+    {
+        $this->assertEquals(true, static::getDatabase()->createAttribute('attributes', 'caseSensitiveInQueue', Database::VAR_STRING, 128, true));
+        $this->expectException(DuplicateException::class);
+        $this->assertEquals(true, static::getDatabase()->createAttribute('attributes', 'CaseSensitiveInQueue', Database::VAR_STRING, 128, true));
+    }
+
+    /**
+     * @depends testAttributeQueueCaseInsensitivity
+     */
+
+    public function testIndexCaseInsensitivity()
+    {
+        $this->assertEquals(true, static::getDatabase()->createIndex('attributes', 'key_caseSensitive', Database::INDEX_KEY, ['caseSensitive'], [128]));
+        $this->expectException(DuplicateException::class);
+        $this->assertEquals(true, static::getDatabase()->createIndex('attributes', 'key_CaseSensitive', Database::INDEX_KEY, ['caseSensitive'], [128]));
+    }
+
+    /**
+     * @depends testIndexCaseInsensitivity
+     */
+
+    public function testIndexQueueCaseInsensitivity()
+    {
+        $this->assertEquals(true, static::getDatabase()->createIndex('attributes', 'key_caseSensitiveInQueue', Database::INDEX_KEY, ['caseSensitive'], [128]));
+        $this->expectException(DuplicateException::class);
+        $this->assertEquals(true, static::getDatabase()->createIndex('attributes', 'key_CaseSensitiveInQueue', Database::INDEX_KEY, ['caseSensitive'], [128]));
+    }
+
     /**
      * Ensure the collection is removed after use
      * 
-     * @depends testInvalidDefaultValues
+     * @depends testIndexQueueCaseInsensitivity
      */
-    public function testCleanupInvalidDefaultValues()
+    public function testCleanupAttributeTests()
     {
         static::getDatabase()->deleteCollection('attributes');
         $this->assertEquals(1,1);
@@ -1466,7 +1508,7 @@ public function testExceptionIndexLimitInQueue()
      */
     public function testExceptionDuplicate(Document $document)
     {
-        $this->expectException(Duplicate::class);
+        $this->expectException(DuplicateException::class);
 
         $document->setAttribute('$id', 'duplicated');
         
@@ -1481,7 +1523,7 @@ public function testExceptionDuplicate(Document $document)
      */
     public function testUniqueIndexDuplicate()
     {
-        $this->expectException(Duplicate::class);
+        $this->expectException(DuplicateException::class);
 
         $this->assertEquals(true, static::getDatabase()->createIndex('movies', 'uniqueIndex', Database::INDEX_UNIQUE, ['name'], [128], [Database::ORDER_ASC]));