MySQL

What MySQL exactly is??

MySQL is an open source RDBMS

Now whats dis RDBMS

Allows u to access and manipulate data within their databases, protect the data from corruption and inconsistence

Difference b/w DBMS and RDBMS

RDBMS is specific to relational databases and it not only supports storage of data in table like structure but also relationships b/w those tables

Why MySQL...

  • Open source
  • Written in C & C++
  • Multi threaded application
  • Platform Independent

Where MySQL...

Downloading and Installing...

  • You can download from http://dev.mysql.com/downloads/
  • Followed by simple installation process

Managing Databases...

  • Creating
  • Modifying
  • Deleting

Creating database

Syntax : create database <databasename>;

>>>create database sfd;

Using database

Syntax : use <databasename>;

>>> use sfd;

Deleting database

Syntax : drop <databasename>;

drop sfd;

Creating table

Syntax : create table<tablename>(

<columnname1> <datatype>(<size>) <constraints>

..............

.............);

Managing Tables...

  • Creating
  • Modifying
  • Deleting

Constraints

  • Primary key
  • Foreign key
  • Unique
  • Not Null
  • Default
  • Check

Some basic commands...

  • create : to create
  • delete : to delete
  • drop : to remove
  • select : used to view the data in the table
  • update: to update the data in any existing column
  • insert: to insert a new row
  • alter : to add a new column or modify the existing one

Clauses of Select statement

  • Where
  • Group By
  • Having
  • Order By

Functions in MySQL...

String Functions...

  • ASCII()
  • LENGTH()
  • CONCAT()
  • INSTR()
  • LCASE()
  • UCASE()
  • REVERSE()
  • SUBSTR()

Numeric Functions ...

  • MOD()
  • POW()
  • ROUND()
  • TRUNCATE()
  • SQRT()

Date and Time Functions ...

  • CURDATE()
  • NOW()
  • DATE()
  • MONTH()
  • YEAR()
  • DAY()
  • DAYOFMONTH()

Summary Functions ...

  • AVG()
  • SUM()
  • MIN()
  • MAX()
  • COUNT()

Connecting MySQL...

  • PHP Application
  • JAVA Application
  • JAVA Web Application
  • ASP.NET/C# Appliaction

FURTHER REFRENCES

mysql

By Pulkit Goyal

mysql

  • 980