big data Flashcards

1
Q

Big Data

A

data that won’t fit the usual containers

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2
Q

big data in terms of volume

A

too big to fit into a single server

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3
Q

big data in terms of velocity

A

streaming data, milliseconds to seconds to respond

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4
Q

big data in terms of variety

A

data in many forms such as structured, unstructured, text, multimedia.

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5
Q

what happens when data sizes are so big as not to fit on to a single server

A

the processing must be distributed across more than one machine

functional programming is a solution, because it makes it easier to write correct and efficient distributed code

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6
Q

features of functional programming make it easier to write

A

correct code

code that can be distributed to run across more than one server.

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7
Q

what big data is

A

data may lack a structure
data will not fit on one server
data must be processed at high velocity

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8
Q

challenges that big data might have

A

cannot be stored on one server
data cannot be represented in a table
unstructured data are difficult to analalyse
cannot process data quickly with one computer

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9
Q

how to overcome the challenges big data might have

A

distribute database systems across multiple servers
use of functional programming
function to data model

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