Database Security Concepts

<p>To determine which data a user can access. (D)</p> Signup and view all the answers

<p>Discretionary (C)</p> Signup and view all the answers

<p>Employing a clear and well-defined security policy. (C)</p> Signup and view all the answers

<p>To implement and enforce security policies. (A)</p> Signup and view all the answers

<p>All of the above. (D)</p> Signup and view all the answers

<p>Database access control mechanisms to enforce security policies. (C)</p> Signup and view all the answers

<p>Views allow access to restricted versions of data, preventing unauthorized access to sensitive information. (B)</p> Signup and view all the answers

<p>A user intentionally attempting to gain unauthorized access by exploiting vulnerabilities. (B)</p> Signup and view all the answers

<p>Authentication ensures that only authorized users can access sensitive data in the database. (D)</p> Signup and view all the answers

<p>Authentication is a specialized field that is beyond the scope of this discussion. (C)</p> Signup and view all the answers

<p>E-commerce applications rely on user authentication and access control, making database security essential. (C)</p> Signup and view all the answers

<p>The password could easily be guessed by other users, leading to unauthorized access. (D)</p> Signup and view all the answers

<p>Views are a fundamental tool for controlling access to sensitive data and are essential for effective security policies. (C)</p> Signup and view all the answers

<p>Security measures should be implemented at multiple levels to prevent attackers from circumventing security mechanisms at one layer by exploiting vulnerabilities at a different layer, such as the operating system or network.</p> Signup and view all the answers

<p>An intruder gaining access as the database administrator would have full control over the DBMS and all its data, including potentially sensitive information, posing a major security risk.</p> Signup and view all the answers

<p>Users may choose weak passwords that are easily guessed, allowing unauthorized access. Additionally, authorized users may misuse sensitive data they have access to, leading to security breaches.</p> Signup and view all the answers

<p>Views act as 'windows' on specific data sets, allowing administrators to restrict access to sensitive information by providing limited views rather than direct access to the underlying data.</p> Signup and view all the answers

<p>In e-commerce, user accounts are often accessed online, making it crucial to verify user identity to prevent unauthorized access and ensure the security of sensitive information like credit card details.</p> Signup and view all the answers

<p>Database access control mechanisms aim to enforce security policies by regulating what actions different users are allowed to perform on specific data within the database.</p> Signup and view all the answers

<p>While authentication is crucial in e-commerce contexts, the text primarily focuses on database access control mechanisms because these mechanisms are specific to database management systems and crucial for data integrity.</p> Signup and view all the answers

<p>Integrity in database security ensures that only authorized users can modify data. This prevents unauthorized alterations or deletions, maintaining the accuracy and consistency of information. For example, a student's grades should only be modifiable by authorized personnel like instructors, not by other students.</p> Signup and view all the answers

<p>The two main approaches are discretionary access control (DAC) and mandatory access control (MAC).</p> Signup and view all the answers

<p>A security policy defines the specific security measures that need to be enforced within a database system. It outlines what data needs protection, which users have access to which portions, and how those permissions are managed. It serves as a guide for implementing security mechanisms to achieve the desired level of protection.</p> Signup and view all the answers

<p>Discretionary access control allows data owners to grant or revoke access permissions to other users based on their discretion. SQL supports DAC through mechanisms like GRANT and REVOKE statements, which enable users to control who can access, modify, or delete specific data based on their roles and responsibilities.</p> Signup and view all the answers

<p>Accessing databases over the internet raises concerns about data transmission security, potential unauthorized access through network vulnerabilities, and the need for secure authentication and authorization mechanisms to protect sensitive data.</p> Signup and view all the answers

<p>In e-commerce applications, database security is paramount as it protects sensitive customer information like credit card details, personal data, and transaction records. Breaches in security can lead to identity theft, financial losses, and damage to the business's reputation.</p> Signup and view all the answers

<p>The database administrator plays a critical role in implementing and maintaining the security policy of a database system. They are responsible for tasks such as defining user roles, granting permissions, enforcing access controls, monitoring security logs, and responding to security breaches, ensuring the overall security and integrity of the database.</p> Signup and view all the answers

<p>A user choosing an easy-to-guess password creates a significant security risk because it makes the account vulnerable to brute-force attacks, where attackers try different combinations of characters until they guess the correct password. Easy passwords are easier to crack than complex passwords, compromising account security and potentially leading to unauthorized access and data breaches.</p> Signup and view all the answers