INFS 247 Lecture Notes - Lecture 8: Data Warehouse, Big Data
19 Jun 2018
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INFS Lecture 8
Big Data
Three types of Data stored in Corporations and Organizations
oOrganizational
oAnalytical structured data
oUnstructured/semi-structured
Big Data
oHeterogenous
From smart devices, social media, sensors
oSemi-structured: web logs, emails, tweets
oUnstructured: text, video, audio
oNot modeled up front for a pre-determined operational and/or analytical use
oCan encompass 80-90 percent of data
oSome of it may be of use, most is not
Example
oVideo Game company
Transactional structured data
Analytical Data
Unstructured/semi-structured data
Data Lake
oLarge data pool in which the schema and data requirements are not defined until the
data is queried
oStorage repository that holds a vast amount of raw data in its native format until it is
needed
Big Data Methods
oStandard database and data warehousing techniques, cannot adequately deal with the
diversity and volume of big data
oAllow organizations to analyze and get insight from the big data
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