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Flashcards in Mobile Storage and Big Data Deck (13)
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1

What risks are introduced by the ability to store data on mobile devices?

Increase in vulnerability of sensitive material, easier to be lost or stolen
Storage constraints

2

What is data synchronization?

Process of establishing consistency among data across multiple different sources

3

What is data backup?

Process of creating and storing copies of data that can be used to protect againts data loss

4

What do data backup and data synchronization have in common?

Both involve creating copies of a file/data, copying the new or modified file instead of entire source

5

How do data backup and data synchronization differ?

If a backup is deleted, still have original copy, if copy is deleted in synchronization it is gone

6

Name advantages of native apps

- Easier to work with native apps
- Peform faster on device
- Access device features
- Provided with tools

7

Name advantages of web apps

- Most recent version is always avaliable and used by everyone
- manipulated so can be compatabile with older devices

8

Name disadvantages of native apps

- Can't guaretee that all users are using the same version
- higher cost
- harder to mantain

9

Name disadvantages of web apps

- limited scope as far as accessing device features
- not listed in an app store

10

Which V properties are commonly used to characterize big data?

Volume
Variety
Velocity

11

Describe Volume

Larger amounts of data, ever growing data of all types

12

Describe Variety

Data is in various forms, structured, unstructured, semi-structured

13

Describe Velocity

Data to be processed is rapidly accumlated, new data arriving frequently and from multiple sources