(Data|State) Management and Processing

1 - About

This section is about data and state management as opposed to code.

System that manages data are called database.

In a computer, there is two kinds of byte:

  • instruction byte
  • and data byte.

This section is about data byte. See Memory

2 - Data

Data are recorded facts.

Data are often viewed as the lowest level of abstraction from which information and knowledge are derived.

Data comes from the Latin word “datum” meaning a “thing given”.

The word “data” is the plural of the word “datum”, which means the result of a single measurement.

Data without context tells a misleading story.

In God we trust; all others must bring data. W.E. Deming

Data is structured information with potential for meaning. Scott Murray - Interactive Data Visualization for the Web - Chapter 5. Data

3 - Application needs

Application needs to:

  • Store and retrieve data:
    • a small amount (OLTP databases),
    • analytics (OLAP, columnar databases)
  • Speed up response time by remembering the result of expensive operations (caches),
  • Search data or filter it (search indexes),

4 - Information Managment

5 - Type

6 - From Data To Wisdom

  • Data: recorded facts
  • Information: patterns, or expectations, that underlie them
  • Knowledge: the accumulation of your set of expectations
  • Wisdom: the value attached to knowledge

7 - Documentation / Reference

data/data.txt · Last modified: 2018/12/13 09:33 by gerardnico