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SQL manuals.
Databases. |
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Definition of SQL |
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Abbreviation of structured query language, and
pronounced either see-kwell or as separate letters. SQL is a
standardized query language for requesting information from a database.
The original version called SEQUEL (structured English query language)
was designed by an IBM research center in 1974 and 1975. SQL was first
introduced as a commercial database system in 1979 by Oracle
Corporation.
Historically, SQL has been the favorite query language for database
management systems running on minicomputers and mainframes.
Increasingly, however, SQL is being supported by PC database systems
because it supports distributed databases (databases that are spread out
over several computer systems). This enables several users on a
local-area network to access the same database simultaneously.
Although there are different dialects of SQL, it is nevertheless the
closest thing to a standard query language that currently exists. In
1986, ANSI approved a rudimentary version of SQL as the official
standard, but most versions of SQL since then have included many
extensions to the ANSI standard. In 1991, ANSI updated the standard. The
new standard is known as SAG SQL.
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Introduction to SQL 4.11 |
This page is a tutorial of the Structured Query Language (also
known as SQL) and is a pioneering effort on the World Wide Web,
as this is the first comprehensive SQL tutorial available on the
Internet.
This page will describe how to use SQL, and give examples. The SQL used
in this document is "ANSI", or standard SQL. |
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Introduction to SQL 2.57 |
Same as above but other version |
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SQL-tutorial |
Very well structured tutorial. It allows to view documentation
concerning all sql instructions. |
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Introduction
to SQL |
"In this tutorial you will learn how to use SQL to access and manipulate
data in Oracle, Sybase, SQL Server, DB2, Access, and other database
systems." |
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Baycongroup SQL
tutorial |
"Our SQL tutorial provides the help you need to get started using SQL." |
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1keydata SQL
tutorial |
"Whether you are a beginner seeking SQL help, or a data warehousing
veteran looking for a SQL reference, you have come to the right place.
This SQL tutorial site lists commonly-used SQL commands, and is divided
into the following sections:
- SQL Commands: How SQL statements are used to store, retrieve, and
manipulate data in a relational database.
- Table Manipulation: How SQL statements are used to manage tables
inside the database.
- SQL Syntax: A single page that lists the syntax for all the SQL
commands in this tutorial." |
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FirsSql SQL tutorial |
"This document is a general tutorial on the database sublanguage - SQL.
It is not product oriented but rather uses standard SQL (SQL92). The
tutorial doesn't cover all of SQL92; it concentrates on a subset of the
standard that is both usable and commonly supported." |
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SQL
tutorial |
"This is an attempt to introduce you to SQL and to explain what
relational databases are, what the relational datamodell is and how you
can extract data from databases with SQL." |
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Manuals.astalaweb.net © 2005
Gabriel Chova Blasco -
All rights reserved
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