2.  Problems 2 is based on the following query:   SELECT EMP_LNAME, EMP_FNAME, EMP_DOB, YEAR(EMP_DOB) AS YEAR   FROM EMPLOYEE   WHERE YEAR(EMP_DOB) = 1966;     What is the likely data sparsity of the EMP_DOB column? Should you create an index on EMP_DOB? Why or why not?

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SQL Query

Structured Query Language is the full form of SQL. It is one of the standard languages to deal with the relational database. It is used to insert, update, delete, and search the records stored in a RDBMS. The relational databases are created and managed by using SQL.