Question: Question No. 7: SQL Constructs Understanding 15 marks Consider two SQL tables R and S. In both tables, R and S, attribute A is a

Question No. 7: SQL Constructs Understanding 15 marks Consider two SQL

Question No. 7: SQL Constructs Understanding 15 marks Consider two SQL tables R and S. In both tables, R and S, attribute A is a key and attribute B is not a key. No attributes are permitted to contain NULL values. Neither table is empty. Do not make any other assumptions about the data. Decide if the two queries are equivalent, i.e., if they are guaranteed to produce the same answer on all possible states of the database

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19. It is not a good idea to become dependent on one person in an organization.

11. As a manager, it is necessary to have organizational power just to do a good job with the tasks assigned to you.

12. It is advisable to always tell people everything you know about a situation.