MySQL Tutorial for beginners Step by Step

MySQL Tutorial

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MySQL Introduction

In this Mysql tutorial you will learn how to build connection of Database. There are a large number of database management systems currently available, some commercial and some free.

Mysql tutorial

Some of them : Oracle, Microsoft Access, Mysql and PostgreSQL.

These database systems are powerful, feature-rich software, capable of organizing and searching millions of records at very high speeds.

Understanding Databases, Records, and Primary Keys

Every Database is composed of one or more tables.

These Tables, which structure data into rows and columns, Impose organization on the data.

The records in a table(below) are not arranged in any particular order.

To make it easy to identify a specific record,therefore, it becomes necessary

BookIdBookNamePrice($)
1The Shining250
2Shutter Island300
3The Overlook180
4Safe Harbour200
5Trunk Music300

to add a unique identifying attribute to each record, such as a serial number or sequence code.
In the preceding example, each record is identified by a unique “record ID” field;
this field is referred to as the Primary key for the table.

Understanding Relationships and Foreign Keys (RDBMS)

You already know that a single database can hold multiple tables.
In a Relational database management system(RDBMS), these tables can be linked to each other by one or more common fields, called foreign keys.

These foreign keys make it possible to create one-to-one or one-to-many relationships between different tables, and combine data from multiple tables.

GenreIdGenreName
1Horror
2Crime
3Romance
AuthorIDAuthorName
1Stephen King
2Danielle Steele
3Dennies Lehane
4Michael Connelly
5Nora Roberts
BookIdBookNameGenerIDAuthorID
1The Shining11
2Shutter Island23
3The Overlook11
4Safe Harbour14
5Trunk Music32
6Sisters32
7Blodd Broters14
8Pet Sematary35

What is Database administrator(DBA) ?

Database administrator is the super user of database, he has unrestricted rights and privileges to access database, grant permission to other database users.

What is Database user(DBU) ?

Database user is the person who uses the database in a restricted privileges, provided by database administrator.

Download MySQL Database

If you have installed PHP’s WAMP or XAMPP server, then mysql database already exists. if you don’t have then download mysql database from here http://www.mysql.com

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