Database – Discussions Create a discussion thread (with your name) and answer the following question(s): Discussion 2 (Chapter 24): What are the main char

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Database – Discussions Create a discussion thread (with your name) and answer the following question(s):

Discussion 2 (Chapter 24): What are the main characteristics of NOSQL systems in the area related to data models and query languages? OR What are the main characteristics of NOSQL systems in the area related to distributed systems and distributed databases?  Pick ONE questions to answer for your initial contribution. 

Instructions:  Your response to the initial question should be 250-300 words.  Next respond to two postings provided by your classmates. The first post should be made by Wednesday 11:59 p.m., EST. I am looking for active engagement in the discussion.  Please engage early and often. You are require to create your initial thread in order to view and respond to the threads posted by other students.  There must be at least one APA formatted reference (and APA in-text citation) to support the thoughts in the post as needed.  Do not use direct quotes, rather rephrase the author’s words and continue to use in-text citations. NOSQL Databases

and Big Data Storage Systems

Dr. Buleje

Outline

 NOSQL systems focus on storage of “big data”

 General categories

 Document-based

 Key-value stores

 Column-based

 Graph-based

 Some systems use techniques spanning two or

more categories

Slide 24- 2

Introduction

 NOSQL

 Most NOSQL systems are distributed databases

or distributed storage systems

Slide 24- 3

Introduction (cont’d.)

 NOSQL systems focus on storage of “big data”

 What are the typical applications that use

NOSQL?

Slide 24- 4

Introduction to NOSQL Systems

 BigTable

 DynamoDB (Amazon)

 Cassandra (Facebook)

Slide 24- 5

Introduction to NOSQL Systems

(cont’d.)

 MongoDB

 Neo4J and GraphBase

 OrientDB

 Database systems classified on the object model

Slide 24- 6

Introduction to NOSQL Systems

(cont’d.)

 NOSQL characteristics related to distributed

databases and distributed systems

 Scalability

 Availability, replication, and eventual consistency

 Replication models

 Sharding of files

 High performance data access

Slide 24- 7

Introduction to NOSQL Systems

(cont’d.)

 NOSQL characteristics related to data models

and query languages

 Schema not required

 Less powerful query languages

 Versioning

Slide 24- 8

Introduction to NOSQL Systems

(cont’d.)

 Categories of NOSQL systems

 Document-based NOSQL systems

 NOSQL key-value stores

 Column-based or wide column NOSQL systems

 Graph-based NOSQL systems

 Hybrid NOSQL systems

 Object databases

 XML databases

Slide 24- 9

Summary

 NOSQL systems focus on storage of “big data”

 General categories

 Document-based

 Key-value stores

 Column-based

 Graph-based

 Some systems use techniques spanning two or

more categories

Slide 24- 10

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