What is SQL?

Answer 1

SQL (commonly expanded to Structured Query Language — see History for the term's derivation) is the most popular computer language used to create, retrieve, update and delete (see also: CRUD) data from relational database management systems. The language has evolved beyond its original purpose, and now supports object-relational database management systems. SQL has been standardized by both ANSI and ISO.

An influential paper, "A Relational Model of Data for Large Shared Data Banks", by Dr. Edgar F. Codd, was published in June, 1970 in the Association for Computing Machinery (ACM) journal, Communications of the ACM, although drafts of it were circulated internally within IBM in 1969. Codd's model became widely accepted as the definitive model for relational database management systems (RDBMS or RDMS).

During the 1970s, a group at IBM's San Jose research center developed a database system "System R" based upon, but not strictly faithful to, Codd's model. Structured English Query (SQL) Language ("SEQUEL") was designed to manipulate and retrieve data stored in System R. The acronym SEQUEL was later condensed to SQL because the word 'SEQUEL' was held as a trademark by the Hawker Siddeley aircraft company of the UK. Although SQL was influenced by Codd's work, Donald D. Chamberlin and Raymond F. Boyce at IBM were the authors of the SEQUEL language design.[1] Their concepts were published to increase interest in SQL.

The first non-commercial, relational, non-SQL database, Ingres, was developed in 1974 at U.C. Berkeley.

In 1978, methodical testing commenced at customer test sites. Demonstrating both the usefulness and practicality of the system, this testing proved to be a success for IBM. As a result, IBM began to develop commercial products based on their System R prototype that implemented SQL, including the System/38 (announced in 1978 and commercially available in August 1979), SQL/DS (introduced in 1981), and DB2 (in 1983).[1]

At the same time Relational Software, Inc. (now Oracle Corporation) saw the potential of the concepts described by Chamberlin and Boyce and developed their own version of a RDBMS for the Navy, CIA and others. In the summer of 1979 Relational Software, Inc. introduced Oracle V2 (Version2) for VAX computers as the first commercially available implementation of SQL. Oracle is often incorrectly cited as beating IBM to market by two years, when in fact they only beat IBM's release of the System/38 by a few weeks. Considerable public interest then developed; soon many other vendors developed versions, and Oracle's future was ensured.

Answer 2

Structured Query Language (SQL). This is the code used to create, edit, add, query and print informtion on a database. U can find more information over the internet im sure. Good luck. Cheers!

Answer 3

One of the oldest relational database programs.70s at least
SQL (commonly expanded to Structured Query Language — see History for the term's derivation) is the most popular computer language used to create, retrieve, update and delete (see also: CRUD) data from relational database management systems. The language has evolved beyond its original purpose, and now supports object-relational database management systems. SQL has been standardized by both ANSI and ISO

Answer 4

SQL - Structured to Query Language
Language used to sort the items retrieved from the database by its group, example you want to display all registered user by date... age or any... or simple to query ^____^

Answer 5

Structured Query Language (SQL)

This is query language for databases.This is pronounced as seequel.We can define,modify,add or delete data in database using this language. this is of following types:
<1>DDL(Data Defination Language): for defining or creating database. Command Example is CREATE
<2> DML(Data Manipulation Language):for modifying,adding or deleting data in database Command Example MODIFY,ADD,DELETE
<3> DCL(Data Control Language): For Transaction Control
Command Example: ROLLBACK,COMMIT

Answer 6

It is a computer language used by the servers to communicate with the Internet connected clients. Actually there is a middle language. It's like a german (server) communicating with a chinese (client), by using a third language. Kind of like that.


Good Luck,

Answer 7

structured query language

It's a standardized way of talking to databases.

Select * from table is an example and it would basically display the table;

Answer 8

A varchar2 is a variable-length column. varchar2 (4000) means the optimal length cost which will be kept interior the field is 4000 characters. For the day of the week, go with TO_CHAR(someDate, 'DAY')

Answer 9

it stands for structured query language, It is used to retrieve data from database. It is th elanguage understands.
select * from . example of that..

Answer 10

http://en.wikipedia.org/wiki/SQL