Update Chapter 1 - Solutions.md

Nivedita123 · Oct 20, 2018 · de1c26b · de1c26b
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@@ -25,6 +25,7 @@ Explain the difference between external, internal, and conceptual schemas. How a
 
 ### `Answer`
 
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 ### Exercise 1.5
 What are the responsibilities of a DBA? If we assume that the DBA is never interested in running his or her own queries, does the DBA still need to understand query optimization? Why?