Types of Data

There are three main types of data:

Record

• Data Matrix
• Document Data
• Transaction Data

Graph

• World wide web
• Social Network

Ordered

• Spatial Data
• Temporal Data
• Sequential Data
• Genetic Sequence Data

Record Data

• Data that consists of a collection of records, each of which consists of a fixed set of attribute.
• Data that consists of a collection of records, each of which consists of a fixed set of attribute.
• Attribute is also known as variable, field, characteristic, dimension, or feature.
• A collection of attributes describe an object.
• Object is also known as record, data point, case, sample, entity, or instance.

Data Matrix

• If data objects have the same fixed set of numeric attributes, then the data objects can be thought of as points in a multi-dimensional space, where each dimension represents a distinct attribute.
• Such data set can be represented by an m by n matrix, where there are m rows, one for each object, and n columns, one for each attribute.

Document Data

• Each document becomes a ‘term‘ vector

•  Each term is component(attribute) of the vector
• The value of each component is the number of times the corresponding terms occur in the document.

Transaction Data

• A special type of record data, where

• Each record (transaction) involves a set of items.
• For example, consider a grocery store. The set of products purchased by a customer during one shopping trip constitute a transaction, while the individual products that were purchased are the items.

Graph Data

• Data consisting of node and Edges. If objects have structure, that is, the objects contain sub objects that have relationships, then such objects are frequently represented as graphs.
• Generic Graph:

• World-wide web:
• Social or information networks:

Ordered Data

• Ordered data is a collection of data elements which are ordered sequences.
• In a ordered data, each item has an index associated with it.
• Example of ordered data is: Spatial Data, Temporal Data, Sequential Data, Genetic Sequence Data, etc.