Q2661480

BSON (; Binary JSON) is a computer data interchange format extending JSON. It is a binary form for representing simple or complex data structures including associative arrays (also known as name-value pairs), integer indexed arrays, and a suite of fundamental scalar types. BSON originated in 2009 at MongoDB. Several scalar data types are of specific interest to MongoDB and the format is used both as a data storage and network transfer format for the MongoDB database, but it can be used independently outside of MongoDB. Implementations are available in a variety of languages such as C, C++, C#, D, Delphi, Erlang, Go, Haskell, Java, JavaScript, Julia, Lua, OCaml, Perl, PHP, Python, Ruby, Rust, Scala, Smalltalk, and Swift.

==Data types and syntax== BSON has a published specification. The topmost element in the structure must be of type BSON object and contains 1 or more elements, where an element consists of a field name, a type, and a value. Field names are strings. Types include: Unicode string (using the UTF-8 encoding) 32-bit integer 64-bit integer double (64-bit IEEE 754 floating point number, including NaN/Inf) decimal128 (128-bit IEEE 754-2008 floating point number; binary integer decimal (BID) variant), suitable as a carrier for decimal-place sensitive financial data and arbitrary precision numerics with 34 decimal digits of precision, a max value of approximately 106145 datetime in UTC (signed 64-bit integer number of milliseconds since the Unix epoch) byte array (for arbitrary binary data) Boolean (true and false) null BSON object BSON array JavaScript code MD5 binary data Regular expression (Perl compatible regular expressions ("PCRE") version 8.41 with UTF-8 support)