Database SQL.

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Presentation transcript:

Database SQL

SQL Relational DB have become the most common data storage mechanism for modern computer applications. SQL  Structured Query Language

SQL create database objects add data delete data modify data retrieve data stored in the database for display and processing

SQL SQL is the language of relational databases. SQL statements.

SQL SQL Syntax: The syntax of an SQL statement refers to the structure and rules used for that statement, For example, the following syntax represents the information you need when you define a CREATE TABLE statement: <table definition> ::= CREATE [ { GLOBAL | LOCAL } TEMPORARY ] TABLE <table name> ( <table element> [ { , <table element> } . . . ] ) [ ON COMMIT { PRESERVE | DELETE } ROWS ]