Question

Q6.) A system that claims to be a Relational Database Management System must support several different features. Which one of the following is NOT one of those requirements?

	1) It provides mechanisms for users to set and enforce integrity rules.
	2) It provides data access through a query language.
	3) It has commands that allow the end user to decide which files and folders will be used to structure how data is stored on the disk.
	4) It has tools for DB backup and recovery.
	5) It has features to provide user security and data privacy.

Answer 1

Answer is Option ( 3 )

Explanation:- A Relational database Management System (RDBMS) have several features, but here we are discussing features according to option and trying to prove options right or wrong :-

• It allow users to maintain integrity by asking them to provide their unique id like mobile number or Email Id.
• Yes,It provides data access through a query language like MySQL, ORACLE ect.
• RDBMS does not provide the access of database to any end user, the access of database structure,file,memory and all things are managed by DBA ( Data Base Administrative ).
• Yes, RDBMS having the tools for backup of all data and recovery.
• Yes,It has features to provide user security and data privacy.

So, from above discussion, it is clear that the option 3 violate the rules of RDBMS system.