SQL Manual
?
Table of Contents:
Introduction 2
SQL Commands 5
SQL Create table 6
SQL assume6
SQl DISTINCT 7
SQL WHERE8
SQL AND & OR8
SQL ORDER By 9
SQP INSERT 10
SQL modify 10
SQL DELETE 11
SQL ALTER TABLE 12
SQL LIKE13
SQL TOP 14
SQL IN 14
SQL BETWEEN15
SQL ALIAS 16
SQL JOIN 17
SQL INNER JOIN 18
SQL entropy TYPES 19
Summary of Statements and syntax 22
INTRODUCTION to SQL
What is SQL?
SQL (Structured Query oral communication) is a shopworn interactive and programming spoken linguistic process for necessitateting information from and update a database. Although SQL is both an ANSI and an ISO tired, many database products support SQL with proprietary extensions to the standard language. Queries take the form of a command language that lets you select, insert, update, mother out the location of data, and so forth. There is also a programming interface.
Often referred to as Structured Query Language (however, there is some debate about its expansion]), is a database ready reckoner language designed for managing data inrelational database management systems (RDBMS), and originally base upon relational algebra.
Its scope includes data insert, query, update and delete, schema foundation garment and modification, and data access control. SQL was one of the first languages for Edgar F. Coddsrelational model in his influential 1970 paper, A Relational Model of Data for puffy Shared Data Banks and became the most widely used language for relational databases.
This language powers simple and complex database management protocols, from sanctioned data input and deletion to complicated queries, manipulation, and reporting of the highest order.
This language allows us to pose complex questions of a database. It also provides a means of creating databases. SQL very widely used. Many database products support SQL, this means that if learn how to use SQL you can apply this...If you want to get a full essay, order it on our website: Orderessay
If you want to get a full essay, wisit our page: write my essay .
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.