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  SQL
       
           /S Q L/ An industry-standard
          language for creating, updating and, querying relational
          database management systems.
       
          SQL was developed by IBM in the 1970s for use in System R.
          It is the de facto standard as well as being an ISO and
          ANSI standard.  It is often embedded in general purpose
          programming languages.
       
          The first SQL standard, in 1986, provided basic language
          constructs for defining and manipulating tables of data; a
          revision in 1989 added language extensions for referential
          integrity and generalised integrity constraints.  Another
          revision in 1992 provided facilities for schema manipulation
          and data administration, as well as substantial enhancements
          for data definition and data manipulation.
       
          Development is currently underway to enhance SQL into a
          computationally complete language for the definition and
          management of persistent, complex objects.  This includes:
          generalisation and specialisation hierarchies, multiple
          inheritance, user defined data types, triggers and
          assertions, support for knowledge based systems,
          recursive query expressions, and additional data
          administration tools.  It also includes the specification of
          abstract data types (ADTs), object identifiers, methods,
          inheritance, polymorphism, encapsulation, and all of the
          other facilities normally associated with object data
          management.
       
          The emerging SQL3 standard is expected to be complete in
          1998.
       
          According to Allen G. Taylor, SQL does _not_ stand for
          "Structured Query Language".  That, like "SEQUEL" (and its
          pronunciation /see'kw*l/), was just another unofficial name
          for a precursor of SQL.  However, the IBM SQL Reference manual
          for DB2 and Craig Mullins's "DB2 Developer's Guide" say SQL
          _does_ stand for "Structured Query Language".
       
          http://www.jcc.com/sql_stnd.html)" rel="nofollow">SQL Standards (http://www.jcc.com/sql_stnd.html).
       
          An SQL parser
          ftp://ftp.uu.net/published/oreilly/nutshell/lexyacc/)" rel="nofollow">(ftp://ftp.uu.net/published/oreilly/nutshell/lexyacc/) is
          described in "Lex & Yacc", by Levine, Mason & Brown published
          by O'Reilly.
       
          The 1995 SQL Reunion: People, Projects, and Politics
          http://www.mcjones.org/System_R/SQL_Reunion_95/)" rel="nofollow">(http://www.mcjones.org/System_R/SQL_Reunion_95/).
       
          ["A Guide to the SQL Standard", C.J. Date, A-W 1987].
       
          ["SQL for Dummies", Allen G. Taylor, IDG Books Worldwide].
       
          (2000-07-07)
       
       

  SQL
       Structured Query Language (ISO 9075, DB, 4GL)
       
       

  SQL
     n.
     1 (lb en computer language databases) (initialism of en w:Structured
  Query Language)
     2 (lb en physics) (initialism of en standard quantum limit)

  SQL
     n.
     1 (lb en computer language databases) (initialism of en w:Structured
  Query Language)
     2 (lb en physics) (initialism of en standard quantum limit)

  SQL
     n.
     1 (lb en computer language databases) (initialism of en w:Structured
  Query Language)
     2 (lb en physics) (initialism of en standard quantum limit)

  SQL
     n.
     1 (lb en computer language databases) (initialism of en w:Structured
  Query Language)
     2 (lb en physics) (initialism of en standard quantum limit)

  SQL
     Englanti abbr.
     (yhteys tietotekniikka k=en) ''Structured Query Language'':
  standardoitu kyselykieli

  SQL //ɛs kjuː ɛl// //ˈsiːkwəl// 
  SQL
  SQL (Structured Query Language)

  SQL //ɛs kjuː ɛl// //ˈsiːkwəl// 
  SQL
  SQL (Structured Query Language)

  SQL //ɛs kjuː ɛl// //ˈsiːkwəl// 
  SQL
  SQL (Structured Query Language)

  SQL /ɛs.ky.ɛl/ 
  SQL
  Langage informatique

  SQL /ɛs.ky.ɛl/ 
  SQL
  Langage informatique

  SQL /ɛs.ky.ɛl/ 
  SQL
  Langage informatique

  SQL /ɛs.ky.ɛl/ 
  SQL
  Langage informatique

  SQL /ɛs.ky.ɛl/ 
  SQL
  Langage informatique

  SQL /ɛs.ky.ɛl/ 
  SQL
  Langage informatique

  SQL /ɛs.ky.ɛl/ 
  SQL
  Langage informatique

  SQL /ɛs.ky.ɛl/ 
  SQL
  Langage informatique

  SQL /ɛs.ky.ɛl/ 
  SQL
  Langage informatique

  SQL /ɛs.ky.ɛl/ 
  SQL
  Langage informatique

  SQL /ˌɛskˌyˈɛl/ 
   [Langage informatique] SQL

  SQL /sˈəkvˌəlˌə/
  SQL (structured query language)

  
/ˈsikwʊɫ/, /ˌɛsˌkjuˈɛɫ/

  结构化查询语言

  SQL
     结构式查询语言