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Which of the following statements is/are false in the context of Relational DBMS?
  1. Views in a database system are important because they help with access control by allowing users to see only a particular subset of the data in the database.
  2. E-R diagrams are useful to logically model concepts.
  3. An update anomaly is when it is not possible to store information unless some other, unrelated information is stored as well.
  4. SQL is a procedural language.
  • a)
    1 and 4 only
  • b)
    3 and 4 only
  • c)
    1, 2 and 3 only
  • d)
    2, 3 and 4 only
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Which of the following statements is/are false in the context of Relat...
  • Views in a database system are important because they help with access control by allowing users to see only a particular subset of the data in the database. (Correct)
  • E-R diagrams are useful to logically model concepts. (Incorrect)
  • An update anomaly is when it is not possible to store information unless some other, unrelated information is stored as well. (Incorrect)
  • SQL is a procedural language. (Incorrect)
So, option (4) is correct.
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Community Answer
Which of the following statements is/are false in the context of Relat...
False Statements in the context of Relational DBMS:

Statement 1: Views in a database system are important because they help with access control by allowing users to see only a particular subset of the data in the database.

This statement is true. Views in a database system are used to provide controlled access to the data. They allow users to see a subset of the data by selecting specific columns or rows from one or more tables. Views can restrict access to sensitive data and provide an additional layer of security by hiding certain information from users who do not need to see it.

Statement 2: E-R diagrams are useful to logically model concepts.

This statement is true. E-R (Entity-Relationship) diagrams are a graphical representation of the logical structure of a database. They are used to model the relationships between entities and their attributes. E-R diagrams help in designing and understanding the database schema by visually representing the entities, their attributes, and the relationships between them.

Statement 3: An update anomaly is when it is not possible to store information unless some other, unrelated information is stored as well.

This statement is false. An update anomaly refers to a situation in which the database becomes inconsistent due to the redundancy of data. It occurs when the same data is stored in multiple places, and a modification to one occurrence of the data does not propagate to all other occurrences. This can lead to data integrity issues and inconsistencies.

Statement 4: SQL is a procedural language.

This statement is false. SQL (Structured Query Language) is a declarative language used for managing and manipulating relational databases. It is not a procedural language like Java or C++. In SQL, users specify what they want to retrieve or modify, and the database management system takes care of the actual implementation. SQL statements are written in a declarative manner, describing the desired result rather than the specific steps to achieve it.

Conclusion:
In the context of Relational DBMS, the false statements are:
- Statement 3: An update anomaly is when it is not possible to store information unless some other, unrelated information is stored as well.
- Statement 4: SQL is a procedural language.

Therefore, the correct answer is option D - 2, 3 and 4 only.
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Which of the following statements is/are false in the context of Relational DBMS? Views in a database system are important because they help with access control by allowing users to see only a particular subset of the data in the database. E-R diagrams are useful to logically model concepts. An update anomaly is when it is not possible to store information unless some other, unrelated information is stored as well. SQL is a procedural language.a)1 and 4 onlyb)3 and 4 onlyc)1, 2 and 3 onlyd)2, 3 and 4 onlyCorrect answer is option 'D'. Can you explain this answer?
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