eXternal Data Representation - meaning and definition. What is eXternal Data Representation
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What (who) is eXternal Data Representation - definition

STANDARD DATA SERIALIZATION FORMAT

eXternal Data Representation         
(XDR) A standard for machine independent data structures developed by Sun Microsystems for use in {remote procedure call} systems. It is defined in RFC 1014 and is similar to ASN.1. (1994-12-13)
Data (computing)         
  • Various types of data which can be visualized through a computer device
QUANTITIES, CHARACTERS, OR SYMBOLS ON WHICH OPERATIONS ARE PERFORMED BY A COMPUTER
Computer data; Type representation; Data (computing)
In computing, data (treated as singular, plural, or as a mass noun) is any sequence of one or more symbols. Datum is a single symbol of data.
Data (computer science)         
  • Various types of data which can be visualized through a computer device
QUANTITIES, CHARACTERS, OR SYMBOLS ON WHICH OPERATIONS ARE PERFORMED BY A COMPUTER
Computer data; Type representation; Data (computing)
In computer science, data (treated as singular, plural, or as a mass noun) is any sequence of one or more symbols; datum is a single symbol of data. Data requires interpretation to become information.

Wikipedia

External Data Representation

External Data Representation (XDR) is a standard data serialization format, for uses such as computer network protocols. It allows data to be transferred between different kinds of computer systems. Converting from the local representation to XDR is called encoding. Converting from XDR to the local representation is called decoding. XDR is implemented as a software library of functions which is portable between different operating systems and is also independent of the transport layer.

XDR uses a base unit of 4 bytes, serialized in big-endian order; smaller data types still occupy four bytes each after encoding. Variable-length types such as string and opaque are padded to a total divisible by four bytes. Floating-point numbers are represented in IEEE 754 format.