Create a metric distant conversion program(PL/SQL) Ask user three questions and collect them with & substitution values 1st: from where     (it could be cm , mt, km , mm) 2nd : to where:    (it could be cm , mt, km , mm) 3rd : amount  For instance if 1st and 2nd entry same send a print message “ same metric conversion is not possible “ and stop the program   If for instance, 1st variable value is from km  then 2nd variable is to where cm and 3rd variable amount is 1  then result will be 1km = 1000cm

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A: In this answer I will be discussing about SQL.

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Multiple Table

In a database, a table is used to store data in the form of rows and columns. Rows are aligned horizontally and identified by one or more values in a specific column. Columns are vertically aligned and identified by a unique column name.