Database Architecture Models
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Questions and Answers

What is the primary advantage of a three-tier architecture in terms of security?

  • Better protection against unauthorized access (correct)
  • Faster query processing
  • Improved data integrity
  • Enhanced scalability

In a one-tier architecture, where are the database, user interface, and application logic typically housed?

  • On separate machines
  • On the same machine or server (correct)
  • On a cloud-based platform
  • On a distributed network

What is the benefit of using a three-tier architecture in terms of scalability?

  • Improved data integrity
  • Ability to handle increased traffic and users (correct)
  • Easier maintenance and updates
  • Faster query processing

What is an example of a two-tier architecture?

<p>An internal CRM system linking to an Access database (D)</p> Signup and view all the answers

What is the primary advantage of a three-tier architecture in terms of integration?

<p>Easier integration with multiple systems and services (C)</p> Signup and view all the answers

Why is a three-tier architecture commonly used in contemporary web applications?

<p>Because it provides better security, scalability, and integration (C)</p> Signup and view all the answers

What does physical-level data independence address?

<p>The internal organization of the schema (B)</p> Signup and view all the answers

What is the main purpose of database architecture?

<p>To provide the foundation of a database management system (C)</p> Signup and view all the answers

What is an example of logical-level data independence?

<p>Adding a new field to a table (A)</p> Signup and view all the answers

What is the tier architecture of a database related to?

<p>Data processing and storage (C)</p> Signup and view all the answers

What is the benefit of physical-level data independence?

<p>Changes to the internal schema without affecting the logical schema (B)</p> Signup and view all the answers

What is the main goal of database architecture in terms of data management?

<p>To influence the efficiency and efficacy of data management (C)</p> Signup and view all the answers

What is the primary goal of concurrency control in a database?

<p>To preserve data consistency during concurrent access (D)</p> Signup and view all the answers

What is the acronym that stands for the qualities of transactions in a database?

<p>ACID (B)</p> Signup and view all the answers

What is the main benefit of achieving data independence in a database?

<p>Reduced costs and time when modifying the schema (C)</p> Signup and view all the answers

What is the process of asking a database query to retrieve particular information?

<p>Data retrieval (B)</p> Signup and view all the answers

What is the primary step to achieve data independence in a database?

<p>Data abstraction (D)</p> Signup and view all the answers

What is the purpose of controlling user access and permissions in a database?

<p>To ensure data security (A)</p> Signup and view all the answers

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