
Understanding Database Concepts
Quiz
•
English
•
Professional Development
•
Practice Problem
•
Hard
Ms. Sci
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a DBMS and its primary function?
A DBMS is a cloud service for file sharing.
A DBMS is a type of hardware used for data storage.
A DBMS is software that manages databases, allowing for data creation, retrieval, updating, and management.
A DBMS is a programming language for data analysis.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Define the relational data model.
A method for storing data in a single flat file without relationships.
A framework for organizing data in a non-tabular format.
The relational data model is a way to structure data using tables (relations) with rows and columns, where each table represents an entity and relationships are defined through foreign keys.
A model that uses only hierarchical structures for data storage.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are integrity rules in a database?
Integrity rules are methods for data encryption.
Integrity rules are guidelines for database design.
Integrity rules are only applicable to user permissions.
Integrity rules in a database are constraints that maintain data accuracy and consistency.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain the concept of data modeling.
Data modeling is the process of deleting unnecessary data.
Data modeling involves only data storage techniques.
Data modeling is only about creating databases.
Data modeling is the process of creating a conceptual representation of data structures and their relationships.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is normalization and why is it important?
Normalization is a process that only affects data storage, not performance.
Normalization is important because it minimizes data redundancy, ensures data integrity, and enhances query performance.
Normalization is only necessary for small databases.
Normalization increases data redundancy and slows down queries.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
List the different normal forms in database design.
1NF, 2NF, 3NF, 6NF
1NF, 2NF, 3NF, BCNF, 4NF, 5NF
1NF, 2NF, 3NF, 4NF, 5NF, 8NF
1NF, 2NF, 3NF, 4NF, 5NF, 7NF
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a dependency diagram used for?
To manage user permissions in a system.
To visualize relationships and dependencies between components in a system.
To create a timeline of project milestones.
To track the performance of individual components.
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