# Data stream

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This article is about the more general meaning of the term "data stream". For the UK-specific DSL technology, see Datastream.

In Connection-oriented communication, a data stream is a sequence of digitally encoded coherent signals (packets of data or data packets) used to transmit or receive information that is in the process of being transmitted.[1]

## Formal definition

In a formal way, a data stream is any ordered pair ${\displaystyle (s,\Delta )}$ where:

1. ${\displaystyle s}$ is a sequence of tuples and
2. ${\displaystyle \Delta }$ is a sequence of positive real time intervals.