diff --git a/README.rst b/README.rst
index 46cc410..279b3c1 100644
--- a/README.rst
+++ b/README.rst
@@ -128,14 +128,14 @@ Resources
 
 DB-API 2.0: http://www.python.org/dev/peps/pep-0249/
 
-NuoDB Documentation: http://doc.nuodb.com/display/DOC/Getting+Started
+NuoDB Documentation: http://doc.nuodb.com/display/DOC/NuoDB+Online+Documentation
 
 License
 -------
 
 PyNuoDB is licensed under a `BSD 3-Clause License <https://github.com/nuodb/nuodb-python/blob/master/LICENSE>`_.
 
-.. _Documentation: http://doc.nuodb.com/display/DOC/Getting+Started
+.. _Documentation: http://doc.nuodb.com/display/doc/
 .. _NuoDB: http://www.nuodb.com/
 .. _CPython: http://www.python.org/
 .. _PEP 249: https://www.python.org/dev/peps/pep-0249/
diff --git a/pynuodb/__init__.py b/pynuodb/__init__.py
index 41b6510..601c2c9 100644
--- a/pynuodb/__init__.py
+++ b/pynuodb/__init__.py
@@ -1,4 +1,4 @@
-__version__ = '2.2'
+__version__ = '2.3'
 
 from .connection import *
 from .datatype import *
diff --git a/pynuodb/datatype.py b/pynuodb/datatype.py
index c9b40ae..abddb74 100644
--- a/pynuodb/datatype.py
+++ b/pynuodb/datatype.py
@@ -121,6 +121,7 @@ def __cmp__(self, other):
       "double precision":NUMBER,      
       "date":DATETIME,
       "timestamp":DATETIME,
+      "datetime":DATETIME,
       "time":DATETIME,
       "clob":BINARY,
       "blob":BINARY,
diff --git a/pynuodb/exception.py b/pynuodb/exception.py
index 18189c3..e1497d2 100644
--- a/pynuodb/exception.py
+++ b/pynuodb/exception.py
@@ -89,8 +89,8 @@ def db_error_handler(error_code, error_string):
         raise DataError(error_code_string + ': ' + error_string)
     elif error_code in protocol.OPERATIONAL_ERRORS:
         raise OperationalError(error_code_string + ': ' + error_string)
-    # elif errorCode in []:
-    #     raise IntegrityError(error_code_string + ': ' + errorString)
+    elif error_code in protocol.INTEGRITY_ERRORS:
+        raise IntegrityError(error_code_string + ': ' + error_string)
     elif error_code in protocol.INTERNAL_ERRORS:
         raise InternalError(error_code_string + ': ' + error_string)
     elif error_code in protocol.PROGRAMMING_ERRORS:
diff --git a/pynuodb/protocol.py b/pynuodb/protocol.py
index 77c01b2..8ebead2 100644
--- a/pynuodb/protocol.py
+++ b/pynuodb/protocol.py
@@ -252,6 +252,8 @@
                    DEADLOCK,
                    IS_SHUTDOWN}
 
+INTEGRITY_ERRORS = {UNIQUE_DUPLICATE}
+
 PROGRAMMING_ERRORS = {SYNTAX_ERROR,
                       CONNECTION_ERROR,
                       APPLICATION_ERROR,