Search results
Results from the WOW.Com Content Network
From Wikipedia, the free encyclopedia. ISO 639is a standardized nomenclature used to classify languages.[1] Each language is assigned a two-letter (set 1) and three-letter lowercase abbreviation (sets 2–5).[2] Part 1 of the standard, ISO 639-1defines the two-letter codes, and Part 3 (2007), ISO 639-3, defines the three-letter codes, aiming to ...
SQL syntax. The syntax of the SQL programming language is defined and maintained by ISO/IEC SC 32 as part of ISO/IEC 9075. This standard is not freely available. Despite the existence of the standard, SQL code is not completely portable among different database systems without adjustments.
ISO 639 is a set of international standards that lists short codes for language names. The following is a complete list of three-letter codes defined in part two (ISO 639-2) of the standard, [ 1 ] including the corresponding two-letter (ISO 639-1) codes where they exist. Where two ISO 639-2 codes are given in the table, the one with the ...
SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...
SQL combines the roles of data definition, data manipulation, and query in a single language. It was one of the first commercial languages for the relational model, although it departs in some respects from the relational model as described by Codd (for example, the rows and columns of a table can be ordered). SQL became a standard of the ...
Aggregate function. In database management, an aggregate function or aggregation function is a function where multiple values are processed together to form a single summary statistic. (Figure 1) Entity relationship diagram representation of aggregation. Common aggregate functions include: Others include: Formally, an aggregate function takes ...
An IETF BCP 47 language tag is a standardized code that is used to identify human languages on the Internet. [1] The tag structure has been standardized by the Internet Engineering Task Force (IETF) [ 1 ] in Best Current Practice (BCP) 47 ; [ 1 ] the subtags are maintained by the IANA Language Subtag Registry .
ISO 639-1:2002, Codes for the representation of names of languages—Part 1: Alpha-2 code, is the first part of the ISO 639 series of international standards for language codes. Part 1 covers the registration of "set 1" two-letter codes. There are 183 two-letter codes registered as of June 2021. The registered codes cover the world's major ...