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SQL Test Performance for the Better with Expert Guidance My SQL,PHP,RDBMS
What is SQL? SQL (pronounced "ess-que-el") stands for Structured Query Language. SQL is used to communicate with a database. According to ANSI (American National Standards Institute), it is the standard language for relational database management systems. SQL statements are used to perform tasks such as update data on a database, or retrieve data from a database. Some common relational database management systems that use SQL are: Oracle, Sybase, Microsoft SQL Server, Access, Ingres, etc. Although most database systems use SQL, most of them also have their own additional proprietary extensions that are usually only used on their system. However, the standard SQL commands such as "Select", "Insert", "Update", "Delete", "Create", and "Drop" can be used to accomplish almost everything that one needs to do with a database. This tutorial will provide you with the instruction on the basics of each of these commands as well as allow you to put them to practice using the SQL Interpreter.
What Can SQL do? • SQL can execute queries against a database • SQL can retrieve data from a database • SQL can insert records in a database • SQL can update records in a database • SQL can delete records from a database • SQL can create new databases • SQL can create new tables in a database • SQL can create stored procedures in a database • SQL can create views in a database • SQL can set permissions on tables, procedures, and views
The query and database structure CREATE TABLE `posts` ( `Id` int(11) NOT NULL, `AcceptedAnswerId` int(11) DEFAULT NULL, `AnswerCount` int(11) DEFAULT NULL, `Body` longtext CHARACTER SET utf8 NOT NULL, ... `OwnerUserId` int(11) DEFAULT NULL, ... `Title` varchar(250) CHARACTER SET utf8 DEFAULT NULL, `ViewCount` int(11) NOT NULL PRIMARY KEY (`Id`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1
RDBMS and SQL SQL is one of the most important factors required to develop a new website that comprises of data from any particular database. SQL is recruited to withdraw data from the database. RDBMS or Relational Database Management System forms the basis for SQL. Not just that, RDBMS is a basis for all major database software that includes Oracle, IBM DB2, and MySQL and so on. Reference textbooks can be the perfect source for students to obtain SQL Solutions
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