Module 1 - Types of Data in Big Data Environments

Question 1

Types of data processed by BD

Answer 1

1. structured data
2. unstructured data
3. semi-structured data
   4 (technically not a data type) - metadata

Question 2

synonym of type of data?

Answer 2

data format

Question 3

Structured Data characteristics are:

Answer 3

1. conforms to a data model
2. is stored in tabular form
3. can be relational

Question 4

Unstructured Data Characteristics are:

Answer 4

1. does not conform to data model or data schema

2. is generally inconsisten and non relational

Question 5

Differences between structured and unstructured data?

Answer 5

1. Unstructured data requires special or customized logic for pre-processing and storage while structured not
2. Unstructured can not be processed by SQL

Question 6

Semi-Structured data is?

Answer 6

the one that have a defined level of structure but can not be relational in nature

Question 7

Examples of semi-structured data ?

Answer 7

1. excel,
2. edi,
3. emails,
4. rss
5. feeds

Question 8

Exmaples of metadata?

Answer 8

1. xml tags

2. attributes providing the file size and resolution of a digital photographyt

Question 9

who has more noise-to-signal ratio? structured, unstructured or semistructured?

Answer 9

semi and unstructured data