Update skyline-or-pareto-frontier-using-SQL.md

Author: structured-query-language

skyline-or-pareto-frontier-using-SQL.md

@@ -1,12 +1,13 @@
 # Skyline or Pareto Front using SQL
 
-        ✧    ✧                                        ✧ 
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-           ✦                 ✧   ▅   ✦                     ▅     
-        ✧        ▁✧              █    ✧  ▃ ✦▇      ✧✦  ☽ ✦ █     
-            ▇ ▁  █               █     ▇▅█  █▃    ✦✦       █     
-            █▁█▅▁█ ▃▃▁✧▇▃✧ ▁▁  ▁▅█  ▁ ✦███▁ ██▅  ✦      ▇  █ ▇   
-            ██████▅███▅██▅▁██▁▁███▁▅█▁▅████▅███▁▁▅▁▅▅▅▁▁█▁▁█▁█▁▁▁
+
+✧    ✧                                        ✧ 
+                                                 ✧
+   ✦                 ✧   ▅   ✦                     ▅     
+✧        ▁✧              █    ✧  ▃ ✦▇      ✧✦  ☽ ✦ █     
+    ▇ ▁  █               █     ▇▅█  █▃    ✦✦       █     
+    █▁█▅▁█ ▃▃▁✧▇▃✧ ▁▁  ▁▅█  ▁ ✦███▁ ██▅  ✦      ▇  █ ▇   
+    ██████▅███▅██▅▁██▁▁███▁▅█▁▅████▅███▁▁▅▁▅▅▅▁▁█▁▁█▁█▁▁▁
 
 Skyline computation is an essential database operation that has many applications in multi-criteria decision making scenarios such as recommender systems. As such, Skyline queries have emerged as an increasingly popular tool for identifying a set of interesting objects that balance different user-specified criteria.