added docs

Author: KshitizLohia

ads/feature_store/docs/source/data_versioning.rst

@@ -0,0 +1,33 @@
+Data Versioning
+****************
+
+Data versioning is a practice aimed at recording the various data commits integrated into a particular feature group and dataset. This involves tracking changes in data over time while maintaining consistent schema structures and feature definitions within a shared schema version. In the context of feature store, it's important to note that data versioning features are exclusively available for offline feature groups.
+
+.. image:: figures/dataset_versioning.png
+
+
+As Of
+======
+
+You can call the ``as_of()`` method of the ``FeatureGroup`` or ``Dataset`` instance to get specified point in time and time traveled data.
+
+The ``.as_of()`` method takes the following optional parameter:
+
+- ``commit_timestamp: date-time``. Commit timestamp for feature group
+- ``version_number: int``. Version number for feature group
+
+.. code-block:: python3
+
+  # as_of feature group
+  df = feature_group.as_of(version_number=1)
+
+
+History
+=======
+
+You can call the ``history()`` method of the ``FeatureGroup`` or ``Dataset`` instance to show history of the feature group.
+
+.. code-block:: python3
+
+  # Show history of feature group
+  df = feature_group.history()

ads/feature_store/docs/source/feature_group.rst

@@ -317,10 +317,10 @@ The ``.preview()`` method takes the following optional parameter:
   # Preview feature group
   df = feature_group.preview(row_count=50)
 
-as_of
+As Of
 =======
 
-You can call the ``as_of()`` method of the FeatureGroup instance to get specified point in time and time traveled data.
+You can call the ``as_of()`` method of the ``FeatureGroup`` instance to get specified point in time and time traveled data.
 
 The ``.as_of()`` method takes the following optional parameter: