Data Science Exam 2 Question and
answers rated A+ 2025/2026
Tables - correct answer ✔Made up of records (Rows)
Rows - correct answer ✔Made up of fields (Columns)
Fields - correct answer ✔Columns that define the values in the rows, Made up of characters
Flat File Database - correct answer ✔EmpNo Ename DeptNo DeptName
101 Abigail 10 Marketing
Relational Database - correct answer ✔DeptNo DeptName
10 Marketing
20 Purchasing
EmpNo EName DeptNo
101 Abigail 10
102 Bob 20
Big Data - correct answer ✔Set of technologies, a way of processing large amounts of data, not
extracting insight from it.
Hadoop - correct answer ✔Platform that makes big data easier to manage,
Stores big databases in smaller pieces across a network of connected computers,
, Stores real-time cable box activity for 5,000,000 customers, by region
To Understand Hadoop - correct answer ✔stores files, and how it processes data.
Map Reduce - correct answer ✔Breaks up the task and gives each connected computer a small piece to
work on,
Analyzes which programs people are mostly likely to pause and then skip commercials
Data Records - correct answer ✔Rows in the table below the header that contain the data.
Record Set - correct answer ✔One row of data that contains values for each field.
20% Structured Data, 80% Unstructured - correct answer ✔...
Machine-generated unstructured data Examples - correct answer ✔Satellite images, scientific data,
photographs and videos, radar and sonar data
Human generated unstructured data examples: - correct answer ✔Text internal to your company,
social media data, website content
Unstructured Data - correct answer ✔Does not follow a specific format for big data.
Content Management Systems (CMSs) - correct answer ✔manage the complete life cycle of content.
This can include web content, document content, and other forms media.
Sentence-Level Sentiment Analysis - correct answer ✔Single document that may contain multiple
opinions even about the same entities. Example
answers rated A+ 2025/2026
Tables - correct answer ✔Made up of records (Rows)
Rows - correct answer ✔Made up of fields (Columns)
Fields - correct answer ✔Columns that define the values in the rows, Made up of characters
Flat File Database - correct answer ✔EmpNo Ename DeptNo DeptName
101 Abigail 10 Marketing
Relational Database - correct answer ✔DeptNo DeptName
10 Marketing
20 Purchasing
EmpNo EName DeptNo
101 Abigail 10
102 Bob 20
Big Data - correct answer ✔Set of technologies, a way of processing large amounts of data, not
extracting insight from it.
Hadoop - correct answer ✔Platform that makes big data easier to manage,
Stores big databases in smaller pieces across a network of connected computers,
, Stores real-time cable box activity for 5,000,000 customers, by region
To Understand Hadoop - correct answer ✔stores files, and how it processes data.
Map Reduce - correct answer ✔Breaks up the task and gives each connected computer a small piece to
work on,
Analyzes which programs people are mostly likely to pause and then skip commercials
Data Records - correct answer ✔Rows in the table below the header that contain the data.
Record Set - correct answer ✔One row of data that contains values for each field.
20% Structured Data, 80% Unstructured - correct answer ✔...
Machine-generated unstructured data Examples - correct answer ✔Satellite images, scientific data,
photographs and videos, radar and sonar data
Human generated unstructured data examples: - correct answer ✔Text internal to your company,
social media data, website content
Unstructured Data - correct answer ✔Does not follow a specific format for big data.
Content Management Systems (CMSs) - correct answer ✔manage the complete life cycle of content.
This can include web content, document content, and other forms media.
Sentence-Level Sentiment Analysis - correct answer ✔Single document that may contain multiple
opinions even about the same entities. Example
