22 Questions
What does the term 'velocity' refer to in the context of big data?
The speed at which data is entered into the system and processed
How does 'scaling out' differ from 'scaling up' when managing big data?
Scaling out involves spreading the workload across multiple servers, while scaling up involves migrating each system to a larger one.
Which characteristic of big data refers to variations in the structure of data to be stored?
Variety
What is meant by 'Veracity' in the context of big data?
The trustworthiness of the data
In the Hadoop framework, what are the core components responsible for?
Operational functions within the framework
Which type of databases focus on working with document storage like MongoDB?
NoSQL databases
Which processing approach is focused on the input processing and requires analysis of the data stream as it enters the system?
Stream Processing
What is the primary function of the Name Node in HDFS?
To contain file system metadata
Which of the following is NOT a characteristic of Hadoop Distributed File System (HDFS)?
Low latency
What is the primary function of the Map function in MapReduce?
To sort and filter data into a set of key-value pairs
What is the purpose of the Job Tracker in MapReduce?
To act as a central control program
Which NoSQL database model stores data as a collection of key-value pairs organised as buckets?
Key-value
What is the primary purpose of the Reduce function in MapReduce?
To produce a single result
What is Polyglot Persistence?
The coexistence of various data storage and management technologies
What is the primary function of the Sqoop tool in Hadoop ecosystem?
To convert data back and forth between a relational database and the HDFS
What is the purpose of the Feedback Loop Processing?
To analyse the data to produce actionable results
Which statement best describes the relationship between document databases and key-value databases?
Document databases are a subtype of key-value databases, storing data in key-value pairs.
Which statement is true regarding column-centric and row-centric storage in column-oriented databases?
Column-centric storage focuses on a single column across many rows, while row-centric storage focuses on all columns of a given set of rows.
What does aggregate awareness refer to in the context of aggregate aware database models?
Data collected around a central topic or entity, making it relatively independent.
What are the challenges faced by the relational model when dealing with Big Data?
The relational model struggles with data that is of such volume, velocity, variety, veracity, and value that it cannot adapt.
What is a key feature of NewSQL databases?
NewSQL databases integrate features of both RDBMS and NoSQL databases with a highly distributed infrastructure.
What is a column family in the context of column-oriented databases?
A column family is a group of columns treated as a single unit within a key-value pair.
Test your knowledge on Big Data and NoSQL databases with this quiz based on Chapter 16 of 'Database Principles Fundamentals of Design, Implementation, and Management'. Explore the role and primary characteristics of Big Data in modern business, and understand how it goes beyond the traditional '3 Vs'.
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