Mysql database

MySQL 5.6 Database System
Presented by : Ms. ARSHI

• A database management system (DBMS) defines,
creates, and maintains a database.
• RDBMS data is structured in database tables, fields and
records.
What is RDBMS?
Components of a Database System

• Commercial software
 Sybase Adaptive Server Enterprise
 IBM DB2
 Oracle
 Microsoft SQL Server
 Teradata
• Free/GPL/Opensource:
 MySQL
 PostgreSQL
Who are the main contenders?
Comparison of Relational
database management
systems

Vendor leaders
 For low-medium level servers, Oracle is the leader
in the market share, although growth is declining
 IBM DB2 has the highest market share for high-
end servers and mainframes, increasing growth in
midrange after acquisition of Informix

Operating System Support
Windows Mac OS X Linux BSD UNIX
Adaptive Server Enterprise Yes Yes Yes Yes Yes
DB2 Yes No Yes No Yes
Microsoft SQL Server Yes No No No No
MySQL Yes Yes Yes Yes Yes
Oracle Yes Yes Yes No Yes
PostgreSQL Yes Yes Yes Yes Yes
Teradata Yes No Yes No Yes

 Relational Databases
 Operational Databases
 Database Warehouses
 Distributed Databases
 End-User Databases
Different Types of Database

MySQL is the world's most popular open source database
software, with over 100 million copies of its software
downloaded or distributed throughout it's history.
MySQL is RDBMS which runs a server, providing multi-user
access to a number of databases.
With its superior speed, reliability, and ease of use, MySQL
has become the preferred choice for IT in all sectors or
domains.
Why MySQL?

Many web applications use MySQL as the database component
of a LAMP(Linux (operating system), Apache HTTP Server,
MySQL (database software), and PHP, Perl or Python) software
stack.
Its popularity for use with web applications is closely tied to the
popularity of PHP , which is often combined with MySQL.
Several high-traffic web sites includes: Flickr, Facebook,
Wikipedia, Google, Nokia and YouTube use MySQL for data
storage and logging of user data.
Uses

• MySQL is written in C and C++ and its SQL parser is
written in yacc(Yet Another Compiler Compiler).
• MySQL uses only just under 1 MB of RAM on your laptop
while Oracle 9i installation uses 128 MB
• MySQL is great for database enabled websites while
Oracle is made for enterprises.
• MySQL is portable.
• MySQL default port number is 3306.
Features of MySQL

∗ A storage engine is a software module that a
database management system uses to create, read,
update data from a database.
∗ MyISAM, InnoDB, Memory, Merge, Archive,
Federated, NDB, CSV, Blackhole, Example.
∗ By Default: InnoDB for versions after 5.5
∗ A transaction-safe (ACID compliant) storage engine for
MySQL that has commit, rollback, and crash-recovery
capabilities to protect user data.
Storage Engines
What is
storage
engine?
Default
storage
engine?

∗ 5 different tables present in MySQL are
Database Tables in MySQL
ISAM(Indexed Sequential Access Method)
What
are
Heap
Tables?

∗ MySQL can be installed on Linux using RPM packages.
∗ shell> rpm -qpl MySQL-server-VERSION.glibc23.i386.rpm
∗ This package will install mysql in /var/lib/mysql
∗ Package can be downloaded from:
http://dev.mysql.com/downloads/mysql/#downloads
Installation Summary

∗ Use a terminal that sets the path to
/var/lib/mysql/bin
∗ The following command connects to the server:
∗ mysql -u root -p
∗ you are prompted for the root password.
∗ you can now send commands and SQL statements to
the server
Connecting to the Server

Client-Server Interaction
MySQL
Server
Client
Program
Make a request
(SQL query)
Get results
Client program can be a MySQL command line client,
GUI client, or a program written in any language such
as C, Perl, PHP, Java that has an interface to the
MySQL server.

MySQL Connectors provide connectivity to the
MySQL server for client programs
MySQL Connectors & API
What are
mysql
connectors?

∗ Connector/J is a JDBC Type 4 Driver for connecting Java to
MySQL
∗ Installation is very simple:
∗ Download the “Production Release” ZIP file from
http://dev.mysql.com/downloads/connector/j/3.1.html
∗ Unzip it
∗ Put the JAR file where Java can find it
∗ Add the JAR file to your CLASSPATH, or
∗ In Eclipse: Project --> Properties --> Java Build Path -->
Libraries --> Add External Jars...
Connector/J

∗ First, make sure the MySQL server is running
∗ In your program,
∗ import java.sql.Connection; // not com.mysql.jdbc.Connection
import java.sql.DriverManager;
import java.sql.SQLException;
∗ Register the JDBC driver,
Class.forName("com.mysql.jdbc.Driver").newInstance();
∗ Invoke the getConnection() method,
Connection con =
DriverManager.getConnection("jdbc:mysql:///myDB",
myUserName,
myPassword);
∗ or getConnection("jdbc:mysql:///myDB?user=dave&password=xxx")
Connecting to the server

∗ As a language, the SQL standard has three major components:
∗ A Data Definition Language (DDL) for defining the database
structure and controlling access to the data.
∗ A Data Manipulation Language (DML) for retrieving and
updating data.
∗ A Data Control Language(DCL) concerns with rights, permissions
and other controls of the database system.
Types of SQL Language statements

∗ A relational database management system consists of
a number of databases.
∗ Each database consists of a number of tables.
∗ Example table
Database concepts
marks
table
rows
(records)
column
headings
studentID first_name last_name mark

∗ Each entry in a row has a type specified by the
column.
∗ Numeric data types
∗ TINYINT, SMALLINT, MEDIUMINT,
∗ INT, BIGINT
∗ FLOAT(display_length, decimals)
∗ DOUBLE(display_length, decimals)
∗ DECIMAL(display_length, decimals)
∗ NUMERIC is the same as DECIMAL
Some SQL data types (1)
What is
difference
between
float and
double?

∗ Date and time types
∗ DATE
∗ format is YYYY-MM-DD
∗ DATETIME
∗ format YYYY-MM-DD HH:MM:SS
∗ TIMESTAMP
∗ format YYYYMMDDHHMMSS
∗ TIME
∗ format HH:MM:SS
∗ YEAR
∗ default length is 4
Some SQL data types (2)
What is
difference
between Now()
and
Current_date()?

∗ String types
∗ CHAR
∗ fixed length string, e.g., CHAR(20)
∗ VARCHAR
∗ variable length string, e.g., VARCHAR(20)
∗ BLOB, TINYBLOB, MEDIUMBLOB, LONGBLOB
∗ same as TEXT, TINYTEXT ...
∗ ENUM
∗ list of items from which value is selected
SQL data types (3)
What is
difference
between
BLOB and
Text ?

∗ SHOW
∗ Display databases or tables in current database;
∗ show databases;
∗ show tables;
∗ USE
∗ Specify which database to use
∗ use bookstore;
SQL commands SHOW, USE

∗ CREATE creates a database table
The CREATE Command (1)
CREATE TABLE table_name
(
column_name1 column_type1,
...
column_nameN column_typeN
);
CREATE TABLE table_name
(
...
column_nameN column_typeN,
PRIMARY KEY (column_name1)
);
How to
create
database?
∗ Specifying primary keys

∗ To delete databases and tables use the DROP
command
∗ Examples
 DROP DATABASE db_name;
 DROP TABLE table_name;
The DROP & INSERT Commands
∗ Inserting rows into a table using INSERT command
INSERT INTO table_name
( col_1, col_2, ..., col_N)
VALUES
( val_1, val_2, ..., val_N);
What is
difference
between
DROP and
DELETE
commands
?

∗ Selecting rows from a table
∗ Simplest form: select all columns
∗ Select specified columns
∗ Conditional selection of rows
The SELECT Command (1)
SELECT column_list FROM table_name;
SELECT * FROM table_name;
SELECT column_list FROM table_name
WHERE condition;

∗ Specifying ascending row ordering
∗ Specifying descending row ordering
10/11/16
The SELECT Command (2)
WHERE condition
ORDER by ASC;
WHERE condition
ORDER by DESC;

∗ Used to modify an existing record
∗ Conditional update version
10/11/16
The UPDATE Command
UPDATE table_name
SET col_1 = 'new_value1',
..., col_n = 'new_value2';
UPDATE table_name
SET col_1 = 'new_value1',
..., col_n = 'new_value2'
WHERE condition;

∗ Selecting the complete table
10/11/16
The Marks Table
SELECT * FROM marks;
+-----------+------------+-----------+------+
| studentID | first_name | last_name | mark |
+-----------+------------+-----------+------+
| 1 | Fred | Jones | 78 |
| 2 | Bill | James | 67 |
| 3 | Carol | Smith | 82 |
| 4 | Bob | Duncan | 60 |
| 5 | Joan | Davis | 86 |
+-----------+------------+-----------+------+
5 rows in set (0.00 sec)

∗ Select rows according to some criterion
10/11/16
The WHERE Clause (1)
SELECT * FROM marks WHERE studentID > 1
AND studentID < 5;
+-----------+------------+-----------+------+
+-----------+------------+-----------+------+
| 2 | Bill | James | 67 |
| 3 | Carol | Smith | 82 |
| 4 | Bob | Duncan | 60 |
+-----------+------------+-----------+------+

∗ Select rows according to some criterion
10/11/16
The ORDER BY Clause
SELECT * FROM marks ORDER BY mark DESC;
+-----------+------------+-----------+------+
+-----------+------------+-----------+------+
| 5 | Joan | Davis | 86 |
| 3 | Carol | Smith | 82 |
| 1 | Fred | Jones | 78 |
| 2 | Bill | James | 67 |
| 4 | Bob | Duncan | 60 |
+-----------+------------+-----------+------+

 A fully managed relational mySQL databases on cloud hosted by
Google platform.
 Runs on Google infrastructure
 Google + MySQL
 Cloud SQL provides a database infrastructure for applications
running anywhere

Wordpress sites, e-commerce applications, CRM tools, or any
other application that is compatible with MySQL.
 It doesn't require any software installation.
 Security:
∗ Cloud SQL customer's data is encrypted i.e. Every Cloud SQL
instance includes a network firewall.
Cloud SQL

Mysql database

Recommended

More Related Content

What's hot (20)

Viewers also liked (20)

Similar to Mysql database (20)

Recently uploaded (20)

Mysql database

Editor's Notes