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Author Question: Common sources of traffic to your Web site include all of the following EXCEPT A) paid search ... (Read 189 times)

Wadzanai

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on: Jul 7, 2018
Common sources of traffic to your Web site include all of the following EXCEPT
 
  A) paid search from search engines.
  B) referral Web sites.
  C) accidental visitors.
  D) direct links.

Question 2

What is NoSQL as used for Big Data? Describe its major downsides.
 
  What will be an ideal response?
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iceage

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Reply #1 on: Jul 7, 2018
Answer to Question 1

C

Answer to Question 2

 NoSQL is a new style of database that has emerged to, like Hadoop, process large volumes of multi-structured data. However, whereas Hadoop is adept at supporting large-scale, batch-style historical analysis, NoSQL databases are aimed, for the most part (though there are some important exceptions), at serving up discrete data stored among large volumes of multi-structured data to end-user and automated Big Data applications. This capability is sorely lacking from relational database technology, which simply can't maintain needed application performance levels at Big Data scale.
 The downside of most NoSQL databases today is that they trade ACID (atomicity, consistency, isolation, durability) compliance for performance and scalability. Many also lack mature management and monitoring tools.


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