DOCSP-28427 Data Lake Storage - New docs resource (#280)

* DOCSP-28427 Data Lake Storage - New docs resource

* DOCSP-28427 updates for review feedback

* DOCSP-28427 updates for feedback

Author: kanchana-mongodb

source/index.txt

@@ -41,6 +41,24 @@ snapshots, and partitions and stores data in an analytics-optimized
 format. It doesn't support creating pipelines for :manual:`Views
 </core/views/>`. 
 
+Data Storage Format and Query Support 
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+{+adl+} stores data in an analytic oriented format that is based on open 
+source standards with support for polymorphic data. Data is fully
+managed, partition level indexed, and balanced as data grows. {+adl+}
+optimizes data extraction for analytic type queries. When {+adl+}
+extracts new data, it re-balances existing files to ensure consistent
+performance and minimize data scan.  
+
+{+adl+} stores data in a format that best fits its structure to allow
+for fast point-queries and aggregate queries. For point-queries,
+{+adl+}\'s storage format improves performance by finding partitions
+faster. Aggregate type queries only scan the column required to provide
+results. Additionally, {+adl+} partition indexes improve performance for  
+aggregate queries by returning results directly from the partition 
+index without needing to scan underlying files.  
+
 Sample Uses 
 -----------