This document provides an introduction to MySQL and SQL as a programming language for managing databases. It discusses key features of SQL, such as speed, data integrity, and scalability, and outlines basic commands for creating databases, tables, and inserting values. Additionally, it includes common mistakes and a brief exercise for users to practice their skills.

1. MYSQL – INTRO TO DATABASE
Prepared by Chester Chin

2. Structured Query Language
programming language for getting information from
and updating a database.
What does “SQL” Means?

3. Relate SQL like a smart Excel or Access
•Speed, speed and more speed.
•No programming language out there can outperform SQL when it comes
to bulk operations.
•Data integrity
•SQL has many tools to help make sure the data stored conforms to rules
designed by the system architects.
•Availability & scalability
•allows multiple users to work on the same dataset
Advantage of SQL

4. In SQL Language:
SELECT *
FROM Book
WHERE price > 100.00
ORDER BY title;
A quick look at it
In Human Language:
I want a list all of books in the order of alphabetical
order according to title where the price is more than
100.

5. CHECKLIST – Before We Start
• MYSQL 5.5 Command Line Client
• Type every command
• MYSQL Workbench CE
• Graphical User Interface(GUI)
• Make sure you have this two installed

6. KEYWORDS
Database Tables Rows & Columns
Excel File Excel Sheets Rows & Columns

7. LETSSTART
LOAD MYSQL Command Line Client

8. COMMONMISTAKES
;
Missing Semicolon
‘ `
Confusion over ‘ & `
` (Located at top left corner)
‘ (Located beside ENTER)

9. SHOWDATABASES – CommandLine
TYPE:
mysql> show databases;
RESULT:
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
+--------------------+
2 rows in set (0.00 sec)

10. USEDATABASES – CommandLine
TYPE:
mysql> use mysql;
RESULT:
+---------------------------+
| Tables_in_mysql |
+---------------------------+
| columns_priv |
| db |
| func |
| help_category |
| help_keyword |
| help_relation |
| help_topic | ……….AND MORE
+---------------------------+
17 rows in set (0.00 sec)

11. CREATEDATABASE - testdb
Mysql> create DATABASE testdb Mysql > show DATABASES;

12. CREATINGTABLES
NOTE : When you create a ‘TABLE’, you need to create AT LEAST ONE
column.
Mysql>CREATE TABLE `newtable` ( `firstcolumn` VARCHAR(20) NOT
NULL, PRIMARY KEY (`firstcolumn`));
HUMAN LANGUAGE:
Hey, Create a table call ‘newtable’ and create a column named
‘firstcolumn’ that can fit 20 character and must not be empty which is
also a primary key.

13. INSERTINGVALUES
Try type the same thing again. What happened?
INSERT INTO `newtable` (`firstcolumn`) VALUES ('1111');
HUMAN LANGUAGE:
Hey, please insert the value ‘1111’ into the ‘firstcolumn’ or the table
‘newtable’

14. KEYTERMS
Primary Key : ONLY UNIQUE VALUE, NO REPEAT VALUE
VARCHAR : Variable-length character
VARCHAR(10) : Variable-length character, Max 10 character
INT : Integer only
….Many More, however for this level lets just fixed a few.
NOT NULL : Cannot store empty value

15. EXERCISE
CREATE a database ‘exercisedb’
CREATE a table ‘exercisetable’
CREATE a varchar(20) column ‘firstcolumn’ and make it a primary
key.
INSERT any value into column ‘firstcolumn’ [10 times]
INSERT INTO `newtable` (`firstcolumn`) VALUES ('1111');
Mysql>CREATE TABLE `newtable` ( `firstcolumn` VARCHAR(20) NOT
NULL, PRIMARY KEY (`firstcolumn`));
Cheat Sheet

16. SELECTSTATEMENT
SELECT * FROM newtable;
* ALL Column available in this table

17. COMMANDLINE - LIMITATION
If the exercise challenge change to this question.
What do you think?
INSERT any value into column ‘firstcolumn’ [300 times]

18. MYSQLWORKBENCH – GRAPHICAL WAY

19. That’s All, Thanks For Your Time. ^.^
Chinschian@Hotmail.com
Drop me an email if you have inputs
for me to improve.