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COSC 2206 Internet Tools MySQL Database System Installation Overview SQL summary
2-Tier Architecture Web Browser (Client) Web Server PHP
3-Tier Architecture Web Browser (Client) Database Server Web Server PHP
SQL links ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Installation Summary ,[object Object],[object Object],[object Object],[object Object]
Command Line Client ,[object Object],[object Object],[object Object],[object Object]
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.
Connecting to the Server ,[object Object],[object Object],[object Object],[object Object],[object Object]
WARNING WARNING ,[object Object],[object Object],[object Object]
Entering commands (1) ,[object Object],[object Object],mysql> SHOW DATABASES; +-------------+ | Database | +-------------+ | bookstore | | employee_db | | mysql | | student_db | | test | | web_db | +-------------+
Entering commands (2) ,[object Object],[object Object],mysql> USE test; Database changed mysql> SHOW tables; +----------------+ | Tables_in_test | +----------------+ | books | | name2 | | names | | test | +----------------+ 4 rows in set (0.00 sec) mysql>
Entering commands (3) ,[object Object],[object Object],mysql> DESCRIBE names; +-----------+-------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +-----------+-------------+------+-----+---------+----------------+ | id | int(11) | | PRI | NULL | auto_increment | | firstName | varchar(20) | | | | | | lastName | varchar(20) | | | | | +-----------+-------------+------+-----+---------+----------------+ 3 rows in set (0.00 sec) mysql>
Entering commands (4) ,[object Object],[object Object],mysql> SELECT * FROM names; +----+-----------+------------+ | id | firstName | lastName | +----+-----------+------------+ | 1 | Fred | Flintstone | | 2 | Barney | Rubble | +----+-----------+------------+ 2 rows in set (0.00 sec) mysql>
Entering commands (5) ,[object Object],[object Object],[object Object],mysql> INSERT INTO names (firstName, lastName) VALUES ('Ralph', 'Quarry'); Query OK, 1 row affected (0.02 sec) mysql> SELECT * FROM names; +----+-----------+------------+ | id | firstName | lastName | +----+-----------+------------+ | 1 | Fred | Flintstone | | 2 | Barney | Rubble | | 3 | Ralph | Quarry | +----+-----------+------------+ 3 rows in set (0.00 sec) mysql>
Entering commands (6) ,[object Object],[object Object],[object Object],mysql> UPDATE names SET lastName = 'Stone' WHERE id=3; Query OK, 1 row affected (0.28 sec) Rows matched: 1 Changed: 1 Warnings: 0 mysql> SELECT * FROM names; +----+-----------+------------+ | id | firstName | lastName | +----+-----------+------------+ | 1 | Fred | Flintstone | | 2 | Barney | Rubble | | 3 | Ralph | Stone | +----+-----------+------------+ 3 rows in set (0.00 sec) mysql>
Logging output ,[object Object],[object Object],[object Object]
Executing SQL files (1) ,[object Object],[object Object],[object Object],[object Object]
Executing SQL files (2) ,[object Object],[object Object],[object Object]
Documentation ,[object Object],[object Object],[object Object],[object Object],[object Object]
Database concepts (1) ,[object Object],[object Object],[object Object],isbn title author pub year price books table rows (records) column headings
Some SQL data types (1) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Some SQL data types (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
SQL data types (3) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
SQL commands SHOW, USE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The CREATE Command (1) ,[object Object],CREATE TABLE table_name ( column_name1 column_type1, column_name2 column_type2, ... column_nameN column_typeN ); Note: To create a database use the statement CREATE db_name;
The CREATE Command (2) ,[object Object],CREATE TABLE table_name ( column_name1 column_type1 NOT NULL DEFAULT '0', column_name2 column_type2, ... column_nameN column_typeN, PRIMARY KEY (column_name1) );
The CREATE Command (3) ,[object Object],CREATE TABLE table_name ( column_name1 column_type1 PRIMARY KEY NOT NULL DEFAULT '0' AUTO_INCREMENT, column_name2 column_type2, ... column_nameN column_typeN, );
The CREATE Command (4) ,[object Object],[object Object]
Conditional Creation ,[object Object],[object Object],[object Object],[object Object]
The DROP Command ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Note: Don't confuse DROP with DELETE which deletes rows of a table.
The INSERT Command ,[object Object],INSERT INTO table_name ( col_1, col_2, ..., col_N) VALUES ( val_1, val_2, ..., val_N); String values are enclosed in single quotes by default but double quotes are also allowed. Literal quotes need to be escaped using apos; and amp;quot;
The SELECT Command (1) ,[object Object],[object Object],[object Object],[object Object],SELECT column_list FROM table_name; SELECT * FROM table_name; SELECT column_list FROM table_name WHERE condition;
The SELECT Command (2) ,[object Object],[object Object],SELECT column_list FROM table_name WHERE condition ORDER by ASC; SELECT column_list FROM table_name WHERE condition ORDER by DESC;
The SELECT Command (3) ,[object Object],[object Object],[object Object],SELECT COUNT(id) FROM table_name
The UPDATE Command ,[object Object],[object Object],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;
marks.sql (1) studentID first_name USE test; CREATE TABLE marks ( studentID SMALLINT AUTO_INCREMENT NOT NULL , first_name VARCHAR (20) NOT NULL , last_name VARCHAR (20) NOT NULL , mark SMALLINT DEFAULT 0 NOT NULL , PRIMARY KEY (studentID) ); marks table last_name mark
marks.sql (2) -- Insert some rows into marks table INSERT INTO marks (first_name, last_name, mark) VALUES ('Fred', 'Jones', 78); INSERT INTO marks (first_name, last_name, mark) VALUES ('Bill', 'James', 67); INSERT INTO marks (first_name, last_name, mark) VALUES ('Carol', 'Smith', 82); INSERT INTO marks (first_name, last_name, mark) VALUES ('Bob', 'Duncan', 60); INSERT INTO marks (first_name, last_name, mark) VALUES ('Joan', 'Davis', 86);
Executing The Script ,[object Object],[object Object],[object Object]
The Marks Table ,[object Object],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)
The WHERE Clause (1) ,[object Object],SELECT * FROM marks WHERE studentID > 1 AND studentID < 5; +-----------+------------+-----------+------+ | studentID | first_name | last_name | mark | +-----------+------------+-----------+------+ | 2 | Bill | James | 67 | | 3 | Carol | Smith | 82 | | 4 | Bob | Duncan | 60 | +-----------+------------+-----------+------+ 3 rows in set (0.01 sec)
The WHERE Clause (2) ,[object Object],SELECT * FROM marks WHERE mark >= 80; +-----------+------------+-----------+------+ | studentID | first_name | last_name | mark | +-----------+------------+-----------+------+ | 3 | Carol | Smith | 82 | | 5 | Joan | Davis | 86 | +-----------+------------+-----------+------+ 2 rows in set (0.00 sec)
The ORDER BY Clause ,[object Object],SELECT * FROM marks ORDER BY mark DESC ; +-----------+------------+-----------+------+ | studentID | first_name | last_name | mark | +-----------+------------+-----------+------+ | 5 | Joan | Davis | 86 | | 3 | Carol | Smith | 82 | | 1 | Fred | Jones | 78 | | 2 | Bill | James | 67 | | 4 | Bob | Duncan | 60 | +-----------+------------+-----------+------+ 5 rows in set (0.00 sec)
Searching Using LIKE (1) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Searching Using LIKE (2) ,[object Object],[object Object],SELECT * FROM marks WHERE last_name LIKE 'J%' ; SELECT * FROM marks WHERE first_name LIKE '_ _ _' ;
Quoting strings ,[object Object],[object Object],SELECT * FROM marks WHERE last_name = 'Oapos;Reilly' ;
Limiting number of rows ,[object Object],[object Object],[object Object],[object Object],[object Object]
MySQL Functions (1) ,[object Object],[object Object],SELECT COUNT (*) FROM marks; +----------+ | COUNT(*) | +----------+ | 5 | +----------+ 1 row in set (0.00 sec)
MySQL Functions (2) ,[object Object],SELECT SUM (mark) FROM marks; +-----------+ | SUM(mark) | +-----------+ | 373 | +-----------+ 1 row in set (0.00 sec)
MySQL Functions (3) ,[object Object],SELECT AVG (mark) FROM marks; +-----------+ | AVG(mark) | +-----------+ | 74.6000 | +-----------+ 1 row in set (0.00 sec)
MySQL Functions (4) ,[object Object],SELECT MIN (mark) FROM marks; +-----------+ | MIN(mark) | +-----------+ | 60 | +-----------+ 1 row in set (0.00 sec)
MySQL Functions (5) ,[object Object],SELECT MAX (mark) FROM marks; +-----------+ | MAX(mark) | +-----------+ | 86 | +-----------+ 1 row in set (0.00 sec)
books.sql (1) USE web_db; CREATE TABLE books ( isbn CHAR (15) PRIMARY KEY NOT NULL , title VARCHAR (100) NOT NULL , author VARCHAR (100) NOT NULL , pub VARCHAR (20) NOT NULL , year YEAR NOT NULL, price DECIMAL (9,2) DEFAULT NULL ); books table this is a simple design isbn title author pub year price
books.sql (2) -- Insert some books into books table INSERT INTO books VALUES ( '0-672-31784-2' , 'PHP and MySQL Web Development' , 'Luke Welling, Laura Thomson' , 'Sams' , 2001, 74.95 ); INSERT INTO books VALUES ( '1-861003-02-1' , 'Professional Apache' , 'Peter Wainwright' , 'Wrox Press Ltd' , 1999, 74.95 );
Executing The Script ,[object Object],[object Object],[object Object]
employee_db.sql (1) CREATE DATABASE IF NOT EXISTS employee_db; USE employee_db; DROP TABLE IF EXISTS employees; DROP TABLE IF EXITS jobs; employees table jobs table employeeID name position address employeeID hours
employee_db.sql (1) CREATE TABLE employees ( employeeID SMALLINT NOT NULL , name VARCHAR (20) NOT NULL , position VARCHAR (20) NOT NULL , address VARCHAR (40) NOT NULL , PRIMARY KEY (employeeID) ); INSERT INTO employees VALUES (1001, 'Fred', 'programmer', '13 Windle St'); INSERT INTO employees VALUES (1002, 'Joan', 'programmer', '23 Rock St'); INSERT INTO employees VALUES (1003, 'Bill', 'manager', '37 Front St');
employee_db.sql (2) CREATE TABLE jobs ( employeeID SMALLINT NOT NULL , hours DECIMAL (5,2) NOT NULL , ); INSERT INTO jobs VALUES (1001, 13.5); INSERT INTO jobs VALUES (1002, 2); INSERT INTO jobs VALUES (1002, 6.25); INSERT INTO jobs VALUES (1003, 4); INSERT INTO jobs VALUES (1001, 1); INSERT INTO jobs VALUES (1003, 7); INSERT INTO jobs VALUES (1003, 9.5);
Executing The Script ,[object Object],[object Object],[object Object]
Select Queries With Joins (1) ,[object Object],SELECT * FROM employees, jobs; +------------+------+------------+--------------+------------+-------+ | employeeID | name | position | address | employeeID | hours | +------------+------+------------+--------------+------------+-------+ | 1001 | Fred | programmer | 13 Windle St | 1001 | 13.50 | | 1002 | Joan | programmer | 23 Rock St | 1001 | 13.50 | | 1003 | Bill | manager | 37 Front St | 1001 | 13.50 | | 1001 | Fred | programmer | 13 Windle St | 1002 | 2.00 | | 1002 | Joan | programmer | 23 Rock St | 1002 | 2.00 | | 1003 | Bill | manager | 37 Front St | 1002 | 2.00 | | 1001 | Fred | programmer | 13 Windle St | 1002 | 6.25 | | 1002 | Joan | programmer | 23 Rock St | 1002 | 6.25 | | 1003 | Bill | manager | 37 Front St | 1002 | 6.25 |
Select Queries With Joins (2) ,[object Object],| 1001 | Fred | programmer | 13 Windle St | 1003 | 4.00 | | 1002 | Joan | programmer | 23 Rock St | 1003 | 4.00 | | 1003 | Bill | manager | 37 Front St | 1003 | 4.00 | | 1001 | Fred | programmer | 13 Windle St | 1001 | 1.00 | | 1002 | Joan | programmer | 23 Rock St | 1001 | 1.00 | | 1003 | Bill | manager | 37 Front St | 1001 | 1.00 | | 1001 | Fred | programmer | 13 Windle St | 1003 | 7.00 | | 1002 | Joan | programmer | 23 Rock St | 1003 | 7.00 | | 1003 | Bill | manager | 37 Front St | 1003 | 7.00 | | 1001 | Fred | programmer | 13 Windle St | 1003 | 9.50 | | 1002 | Joan | programmer | 23 Rock St | 1003 | 9.50 | | 1003 | Bill | manager | 37 Front St | 1003 | 9.50 | +------------+------+------------+--------------+------------+-------+ 21 rows in set (0.01 sec) The cartesian product query is rarely what we want.
Select Queries With Joins (3) ,[object Object],+------+-------+ | name | hours | +------+-------+ | Fred | 13.50 | | Joan | 2.00 | | Joan | 6.25 | | Bill | 4.00 | | Fred | 1.00 | | Bill | 7.00 | | Bill | 9.50 | +------+-------+ 7 rows in set (0.00 sec) Here we are replacing the employeeID numbers in the jobs table by the employee's name SELECT name, hours FROM employees, jobs WHERE employees.employeeID = jobs.employeeID;
Select Queries With Joins (4) ,[object Object],+------+-------+ | name | hours | +------+-------+ | Fred | 13.50 | | Fred | 1.00 | +------+-------+ 2 rows in set (0.00 sec) SELECT name, hours FROM employees, jobs WHERE employees.employeeID = jobs.employeeID AND name = 'Fred';
Select Queries With Joins (5) ,[object Object],+------+------------+ | name | SUM(hours) | +------+------------+ | Bill | 20.50 | | Fred | 14.50 | | Joan | 8.25 | +------+------------+ 3 rows in set (0.00 sec) SELECT name, SUM(hours) FROM employees, jobs WHERE employees.employeeID = jobs.employeeID GROUP BY name;
Select Queries With Joins (6) ,[object Object],+------+------------+ | name | SUM(hours) | +------+------------+ | Fred | 14.50 | +------+------------+ 1 row in set (0.00 sec) SELECT name, SUM(hours) FROM employees, jobs WHERE employees.employeeID = jobs.employeeID AND name = 'Fred' GROUP BY name;

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MySql slides (ppt)

  • 1. COSC 2206 Internet Tools MySQL Database System Installation Overview SQL summary
  • 2. 2-Tier Architecture Web Browser (Client) Web Server PHP
  • 3. 3-Tier Architecture Web Browser (Client) Database Server Web Server PHP
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  • 7. 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.
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  • 36. marks.sql (1) studentID first_name USE test; CREATE TABLE marks ( studentID SMALLINT AUTO_INCREMENT NOT NULL , first_name VARCHAR (20) NOT NULL , last_name VARCHAR (20) NOT NULL , mark SMALLINT DEFAULT 0 NOT NULL , PRIMARY KEY (studentID) ); marks table last_name mark
  • 37. marks.sql (2) -- Insert some rows into marks table INSERT INTO marks (first_name, last_name, mark) VALUES ('Fred', 'Jones', 78); INSERT INTO marks (first_name, last_name, mark) VALUES ('Bill', 'James', 67); INSERT INTO marks (first_name, last_name, mark) VALUES ('Carol', 'Smith', 82); INSERT INTO marks (first_name, last_name, mark) VALUES ('Bob', 'Duncan', 60); INSERT INTO marks (first_name, last_name, mark) VALUES ('Joan', 'Davis', 86);
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  • 52. books.sql (1) USE web_db; CREATE TABLE books ( isbn CHAR (15) PRIMARY KEY NOT NULL , title VARCHAR (100) NOT NULL , author VARCHAR (100) NOT NULL , pub VARCHAR (20) NOT NULL , year YEAR NOT NULL, price DECIMAL (9,2) DEFAULT NULL ); books table this is a simple design isbn title author pub year price
  • 53. books.sql (2) -- Insert some books into books table INSERT INTO books VALUES ( '0-672-31784-2' , 'PHP and MySQL Web Development' , 'Luke Welling, Laura Thomson' , 'Sams' , 2001, 74.95 ); INSERT INTO books VALUES ( '1-861003-02-1' , 'Professional Apache' , 'Peter Wainwright' , 'Wrox Press Ltd' , 1999, 74.95 );
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  • 55. employee_db.sql (1) CREATE DATABASE IF NOT EXISTS employee_db; USE employee_db; DROP TABLE IF EXISTS employees; DROP TABLE IF EXITS jobs; employees table jobs table employeeID name position address employeeID hours
  • 56. employee_db.sql (1) CREATE TABLE employees ( employeeID SMALLINT NOT NULL , name VARCHAR (20) NOT NULL , position VARCHAR (20) NOT NULL , address VARCHAR (40) NOT NULL , PRIMARY KEY (employeeID) ); INSERT INTO employees VALUES (1001, 'Fred', 'programmer', '13 Windle St'); INSERT INTO employees VALUES (1002, 'Joan', 'programmer', '23 Rock St'); INSERT INTO employees VALUES (1003, 'Bill', 'manager', '37 Front St');
  • 57. employee_db.sql (2) CREATE TABLE jobs ( employeeID SMALLINT NOT NULL , hours DECIMAL (5,2) NOT NULL , ); INSERT INTO jobs VALUES (1001, 13.5); INSERT INTO jobs VALUES (1002, 2); INSERT INTO jobs VALUES (1002, 6.25); INSERT INTO jobs VALUES (1003, 4); INSERT INTO jobs VALUES (1001, 1); INSERT INTO jobs VALUES (1003, 7); INSERT INTO jobs VALUES (1003, 9.5);
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