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Database Management Systems Overview

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Questions and Answers

What is the ultimate goal of 2nd Normal Form (2NF)?

Eliminate all partial dependencies (correct)

Reduce redundancy

Improve data access speed

Ensure data integrity

Which term describes the situation when an attribute matches in a related table?

Composite Key

Foreign Key (correct)

Primary Key

Super Key

What is the main function of a DBMS in managing data?

Creating data models

Improving data sharing

Ensuring data redundancy

Handling data structure (correct)

Which term best describes an issue where different users have duplicate copies of the same data?

Data Redundancy Signup and view all the answers

What does the term 'Data Independence' refer to in database systems?

The freedom to change the physical storage of data without affecting applications using it Signup and view all the answers

In the context of database systems, what is the primary purpose of reducing data redundancy?

Reduce storage costs Signup and view all the answers

What is the main function of a Database Management System (DBMS)?

Minimizing data inconsistency Signup and view all the answers

Which type of database supports only one user at a time?

Single-user Database Signup and view all the answers

What is one of the disadvantages of using a Database Management System (DBMS)?

Increased costs Signup and view all the answers

What is the purpose of a Data Warehouse?

Storing data for tactical decisions Signup and view all the answers

How does a Distributed Database differ from a Centralized Database?

Distributed Database has data located at a single site. Signup and view all the answers

Which of the following best describes Unstructured Data?

Data that exists in its original state Signup and view all the answers

Which function of a Database Management System (DBMS) is responsible for minimizing redundancy and maximizing consistency in data?

Data Integrity management Signup and view all the answers

What part of a DBMS is responsible for ensuring that concurrent access to data does not affect its integrity?

Multiuser access control Signup and view all the answers

In a database system, what type of software is responsible for managing the interactions between the operating system, database, and application programs?

DBMS software Signup and view all the answers

What is the primary purpose of a data dictionary in a Database Management System (DBMS)?

Data Dictionary Signup and view all the answers

Which aspect of a DBMS function is responsible for creating and managing complex structures required for data storage?

Data storage management Signup and view all the answers

In a database system, what ensures that the queries are made in a nonprocedural language to interact with the data?

Data access language and application programming interfaces Query Language Signup and view all the answers