(Data|State|Operand) Management and Processing

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 also known as:

• operand
• or simply value

Data are recorded value that have been:

• measured
• or observed (ie event)

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.

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 (indexes),

Reference : Warehouse Builder 11g - What is new and where do we go from here?

• Data - Unstructured data - (structure-later|schema-later|schema on read) data
• Data - Raw Data
• Logical Data Modeling - Aggregate Data
• Data Science - Big Data
• Dark data designs the data that is hidden in the dark

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

• Weka unit 5 - The data mining process