Apache
Raspberry PI origins from UK. It is a small (credit-card size) fully functional PC that installs Linux. To now, there are two models A and B of Raspberry PI. The A model has 1 USB, 256MB RAM and The enhanced B model has 2 USB, 512 RAM. Both are equipped with ARM 700MHz (single core) CPU, a SD card slot. The B model also comes with an onboard Ethernet interface. The Raspberry PI requires a micro USB power (5V, 1A) and it doesn’t have the power switch. It can be connected to monitor using HDMI or TV using composite video (RCA).
The SD card is used as the booting device ‘hard drive’, a minimal 4GB is required. You can download Linux images fromofficial website. And you can use Win32 Disk Imager to write the *.img to SD card.
Insert the SD card into Raspberry PI.
Power it on and on the first time a configuration program (sudo raspi-config) will run. Using this configuration tool, you’ll be able to set up SSH, keyboard, Memory Split between CPU and GPU etc.
Run the following command to install Apache2 and PHP,
sudo apt-get install apache2 php5 libapache2-mod-php5 |
sudo apt-get install apache2 php5 libapache2-mod-php5
And as we know, PHP without MySQL database is pretty much useless, so we use the following command to install MySQL.
sudo apt-get install mysql-server mysql-client php5-mysql |
sudo apt-get install mysql-server mysql-client php5-mysql
During the MySQL setup, you will be prompted for the root password for MySQL database, and after that we’ll be able to check if MySQL is properly installed.
You can runsudo service mysql restartandsudo service apache restartto restart the MySQL and apache server manually. And you can runphp -vto see the version of PHP.
pi@raspberrypi:~$ php -vPHP 5.4.4-14+deb7u9 (cli) (built: Apr 26 2014 21:57:41) Copyright (c) 1997-2012 The PHP GroupZend Engine v2.4.0, Copyright (c) 1998-2012 Zend Technologies |
pi@raspberrypi:~$ php -vPHP 5.4.4-14+deb7u9 (cli) (built: Apr 26 2014 21:57:41) Copyright (c) 1997-2012 The PHP GroupZend Engine v2.4.0, Copyright (c) 1998-2012 Zend Technologies
The apache server will store aindex.htmlby default on/var/www/index.htmland if you open a browser and type in the IP address of the Raspberry PI, you will get something like this, which means your Raspberry PI now serves as a HTTP server.
–EOF–
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MySQL is suitable for beginners to learn database skills. 1. Install MySQL server and client tools. 2. Understand basic SQL queries, such as SELECT. 3. Master data operations: create tables, insert, update, and delete data. 4. Learn advanced skills: subquery and window functions. 5. Debugging and optimization: Check syntax, use indexes, avoid SELECT*, and use LIMIT.

MySQL efficiently manages structured data through table structure and SQL query, and implements inter-table relationships through foreign keys. 1. Define the data format and type when creating a table. 2. Use foreign keys to establish relationships between tables. 3. Improve performance through indexing and query optimization. 4. Regularly backup and monitor databases to ensure data security and performance optimization.

MySQL is an open source relational database management system that is widely used in Web development. Its key features include: 1. Supports multiple storage engines, such as InnoDB and MyISAM, suitable for different scenarios; 2. Provides master-slave replication functions to facilitate load balancing and data backup; 3. Improve query efficiency through query optimization and index use.

SQL is used to interact with MySQL database to realize data addition, deletion, modification, inspection and database design. 1) SQL performs data operations through SELECT, INSERT, UPDATE, DELETE statements; 2) Use CREATE, ALTER, DROP statements for database design and management; 3) Complex queries and data analysis are implemented through SQL to improve business decision-making efficiency.

The basic operations of MySQL include creating databases, tables, and using SQL to perform CRUD operations on data. 1. Create a database: CREATEDATABASEmy_first_db; 2. Create a table: CREATETABLEbooks(idINTAUTO_INCREMENTPRIMARYKEY, titleVARCHAR(100)NOTNULL, authorVARCHAR(100)NOTNULL, published_yearINT); 3. Insert data: INSERTINTObooks(title, author, published_year)VA

The main role of MySQL in web applications is to store and manage data. 1.MySQL efficiently processes user information, product catalogs, transaction records and other data. 2. Through SQL query, developers can extract information from the database to generate dynamic content. 3.MySQL works based on the client-server model to ensure acceptable query speed.

The steps to build a MySQL database include: 1. Create a database and table, 2. Insert data, and 3. Conduct queries. First, use the CREATEDATABASE and CREATETABLE statements to create the database and table, then use the INSERTINTO statement to insert the data, and finally use the SELECT statement to query the data.

MySQL is suitable for beginners because it is easy to use and powerful. 1.MySQL is a relational database, and uses SQL for CRUD operations. 2. It is simple to install and requires the root user password to be configured. 3. Use INSERT, UPDATE, DELETE, and SELECT to perform data operations. 4. ORDERBY, WHERE and JOIN can be used for complex queries. 5. Debugging requires checking the syntax and use EXPLAIN to analyze the query. 6. Optimization suggestions include using indexes, choosing the right data type and good programming habits.


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