Sql

2 definitions found

From Virtual Entity of Relevant Acronyms (Version 1.9, June 2002) [vera]:

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

From The Free On-line Dictionary of Computing (27 SEP 03) [foldoc]:



  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".
       
          {SQL Standards (http://www.jcc.com/sql_stnd.html)}.
       
          {An SQL parser
          (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/)}.
       
          ["A Guide to the SQL Standard", C.J. Date, A-W 1987].
       
          ["SQL for Dummies", Allen G. Taylor, IDG Books Worldwide].
       
          (2000-07-07)