Which type of dataset is organized into a predefined format like tables in a relational database?
A) Structured
B) Unstructured
C) Semi-structured
D) Metadata

Which of the following is an example of an unstructured dataset?
A) Text documents.
B) Tables in a database
C) CSV files
D) Excel spreadsheets

For what purpose are datasets used in machine learning?
A) To train models to recognize patterns and make predictions
B) To display data visually
C) To create operating systems
D) To manage databases

How do researchers use datasets?
A) To test hypotheses and conduct experiments
B) To create computer programs
C) To build websites
D) To manage social media accounts

What type of dataset has some organization but does not fit neatly into traditional databases?
A) Semi-structured
B) Structured
C) Unstructured
D) Metadata

What is a key characteristic of structured data?
A) It lacks a predefined format.
B) It is organized into predefined fields with fixed data types.
C) It primarily includes images and videos.
D) It does not fit into traditional databases.

Which storage system is commonly used for structured data?
A) MongoDB
B) Cassandra
C) MySQL
D) Elasticsearch

What type of data would be considered unstructured?
A) Customer transaction records
B) XML files
C) Text documents and social media posts
D) CSV files with headers

Which characteristic best describes semi-structured data?
A) It has a rigid schema.
B) It is completely unorganized.
C) It incorporates tags and markers for organization.
D) It can only be stored in relational databases.

Which database system is well-suited for managing semi-structured data?
A) Oracle.
B) PostgreSQL
C) Couchbase.
D) SQL Server

What type of data storage is typically used for unstructured data?
A) Relational databases
B) File systems or NoSQL databases
C) Spreadsheets
D) Metadata catalogs

What is a common use of metadata in document management systems?
A) Storing raw text data
B) Providing additional information like document type, creation date, and author
C) Analyzing data trends
D) Storing multimedia files

Which of the following is an example of metadata in a digital photo?
A) The resolution of the photo
B) The photo’s pixel values
C) The camera settings and GPS coordinates
D) The photo’s file size

In what kind of applications is semi-structured data commonly used?
A) Financial transactions
B) Content management systems and IoT applications
C) Relational databases
D) Document management systems

Why is metadata important in data management?
A) It helps to increase the size of datasets.
B) It provides context and structure, enhancing data usability and accessibility.
C) It replaces the need for data storage.
D) It is only used for security purposes.

MCQ on Data Analytics

What is the primary goal of data analytics?
A) To generate data from multiple sources
B) To uncover hidden pat