Chapter 5 Flashcards
What are the six data element
Database
File
Record
Field
Byte
Bit
Name the data element from largest to smallest
Files
Records
Field
Bytes
Bit
What are the two data type
Structured data
Unstructured data
Explain structure data and give example
organized and fits nicely into tables
Ex: text,date,
Explain unstructured data
doesnt fit into traditional table
ex: image , video
What the difference between static data and dynamic data
static data doesn’t change once its created and dynamic data may change after it’s recorded and must be updated
What is a database
a set of logically related files that contains an organized collection of data that is accessible for fast searching and retrival
Relational databases is
organize structured data in interrelated tables which are connected by similarities between tables
What are the type of Data store and explain them
Data lake is a vast pool of data designed to contain all company data
Data warehouse is designed for reporting and data analysis and contains relevant data that has already been transformed for reporting uses
What is big data
Refers to extremely large and complex data that can be analyzed using recent tech to reveal patterns
The five characteristics of big data
Volume : amounts of data
VARIETY : different format of data
Veracity: accuracy of data
Velocity : speed data
Value : useful data ( most important)
What are the four categories of Data analysis and explain them
Descriptive analytics: What has happened?
Diagnostic analytics: Why did it happen?
Predictive analytics: What is likely to happen?
Prescriptive analytics: How should we act?
