Database Exam 3 (Chapter 11)
An organization using HDFS realizes that hardware failure is
a norm
Smartphones
are examples of business intelligences and analytics 3.0 because they have millions of observations per second
Word processing programs
are not used for querying and analyzing data stored in data warehouse
When a data repository (including internal and external data) does not follow a predefined schema, this is called
data lake
Big data
does not require a strictly defined data model
The NoSQL model that is specifically designed to maintain information regarding the relationships (often real-world instances of entities) between data items is called a
graph oriented database
Veracity
includes concern about data quality issues
All of the following are applications for big data and analytics except
personal finances (applications include security and public health, science and technology, business)
What is an important scripting language to help reduce the complexity of MapReduce
pig
NoSQL systems allow
scaling out by incorporating commodity servers that can be easily added to the architectural solution
First degree or complete price discrimination relates to
the maximum price customers are willing to pay
NoSQL systems enabled automated
sharding to allow distribution of the data among multiple nodes to allow servers to operate independently on the data located on it
Is it true that in an HDFS cluster the NameNode is the
single master server
At a basic level, analytics refers to
analysis and interpretation of data
The three v's commonly associated with big data are
volume, variety, velocity
Apache Cassandra is a leading producer of
wide-column NoSQL database management systems
The NoSQL model that incorporates 'column families' is called a
wide-column store
is it true that in an HDFS cluster the DataNodes are the
larger number of slaves
An organization that decides to adopt the most popular NoSQL database management system would select
MongoDB
An organization that requires a sole focus on performance with the ability to include strings, hashes, lists, and sorted sets would select
Redis database management system
