Which of the following is an important feature of relational databases and SQL

  1. Independence of table relationships

  2. High speed of SQL

  3. Powerful GUI front-end

  4. Easy to install and use


Correct Option: A

AI Explanation

To answer this question, you need to understand the features of relational databases and SQL. Let's go through each option to understand why it is correct or incorrect:

Option A) Independence of table relationships - This option is correct because one of the key features of relational databases is the ability to establish relationships between tables. This allows data to be stored in multiple tables and linked together using keys, providing flexibility and efficient data retrieval.

Option B) High speed of SQL - This option is incorrect because the speed of SQL queries can vary depending on factors such as the complexity of the query, the size of the database, and the efficiency of the database management system. While SQL can be optimized for performance, high speed is not an inherent feature of SQL itself.

Option C) Powerful GUI front-end - This option is incorrect because a GUI front-end is not an inherent feature of relational databases and SQL. While some database management systems may provide GUI tools for easier interaction with the database, the core functionality of SQL can be accessed through command-line interfaces or programming interfaces.

Option D) Easy to install and use - This option is incorrect because the ease of installation and use can vary depending on the specific database management system and the user's familiarity with SQL. While some database management systems may provide user-friendly installation processes and user interfaces, the ease of use is not an inherent feature of relational databases and SQL.

The correct answer is A) Independence of table relationships. This option is correct because the ability to establish relationships between tables is a fundamental feature of relational databases and SQL.

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