If you install new software(s) from FreeBSD ports or binary collection then you will find all necessary startup and stop scripts located into /usr/local/etc/rc.d directory. To start or stop MySQL server you need to change directory to /usr/local/etc/rc.d and start MySQL service using mysql-server.sh script.

Starting MySQL server
To Start MySQL server under FreeBSD type following command (use script):

# /usr/local/etc/rc.d/mysql-server.sh start

Output:

Starting mysql.

Stopping MySQL database server
To Stop MySQL database server under FreeBSD use following script:

# /usr/local/etc/rc.d/mysql-server.sh stop

Output:

Stopping mysql.
Waiting for PIDS: 1268, 1268.

Please note that use above method to start or stop MySQL server manually. As you have already configured MySQL server to start/stop upon system reboot.

Make sure MySQL server start automatically whenever FreeBSD comes up after reboot. FreeBSD provided this facility via /etc/rc.conf file (system configuration information). This file lists which services should be started up at system initial boot time. The rc.conf file contains the global system configuration information referenced by the startup scripts, while rc.conf.local contains the local system configuration.

Configure FreeBSD to start MySQL Server up at system initial boot time

(a) Open /etc/rc.conf file using text editor such as vi:

# vi /etc/rc.conf

(b) Append following line which will enable (start) MySQL server automatically after each reboot:

mysql_enable="YES"

(c) Save file and exit to shell prompt.

MySQL is a multithreaded, multi-user, SQL Database Management System (DBMS) with an estimated six million installations. MySQL AB makes MySQL available as free software under the GNU General Public License (GPL), but they also dual-license it under traditional proprietary licensing arrangements for cases where the intended use is incompatible with the GPL.

Quick Installing and configuring MySQL server steps

1. Install MySQL Server using binary package or ports method
2. Automatically start MySQL server
3. Understanding MySQL service i.e. starting and shutting down MySQL database server
4. Securing MySQL Server – setup root password
5. Enable ipf firewall protection for MySQL server
6. Creating MySQL users

MySQL is one the best and fast database server for setting and using up under FreeBSD. You can install MySQL server using FreeBSD ports collection or install using binary packages from FreeBSD ftp server (which is quite fast as compare to ports method).

Install MySQL v5.0 server

Method # 1: Binary installation method

Login as the root user and type following command :

# pkg_add -r -v mysql5-server

Output:

looking up ftp.freebsd.org
connecting to ftp.freebsd.org:21
setting passive mode
opening data connection
initiating transfer
Fetching ftp://ftp.freebsd.org/pub/FreeBSD/ports/i386/packages-6.0-release/Latest/mysql50-server.tbz...x +CONTENTS
x +COMMENT
x +DESC
....
....
.....
..

Method # 2: Use FreeBSD Ports collection
First Install MySQL server 5.0:

# cd /usr/ports/database/mysql50-server
# make
# make install
# make clean

Next Install MySQL client 5.0:

# cd /usr/ports/database/mysql50-client
# make
# make install
# make clean

This is considered as third-generation language. Programming languages such as C++, Java, Cobol, Fortran, BASIC etc all are examples of high level language. The entire program is written in English like language with some rules and regulation (read as grammar). For example, consider following C program:

main()
{
int x=2;
int y=5;
int c=x+y;
printf("x + y = %d\n",c);
}

OR Basic same program in BASIC:

1 LET x = 2
2 LET y = 5
3 LET c = x+y
4 PRINT c
5 END

Both of above program are easy to read and manage. Genreally you use term called source code for English like language code.

Further, the time and cost of creating machine and/or assembly language was quite high. However, a computer cannot understand program written in English. Therefore, you use special program called compiler or interpreter to translate source code to object code:

-----------+
Program    |           +-------------+        +-------------+
Written    |           |  Compiler/  |        | Object code |
In         | =======>  |     OR      | =====> | (0s and 1s  |
High level |           | Interpreter |        |  code )     |
Language   |           +-------------+        +-------------+
-----------+

The difference between Compiler and Interpreter

Compiler	Interpreter
Scan the entire program first and then translate it into machine code	Translate the program line by line on fly
Scan the entire program first and then translate it into machine code	Convert the entire program to machine code only when there is no syntax error and then you can execute program
Execution time is less	Execution time is more
Slow for debugging	Good for fast debugging

Advantage of High level Language

1. Readability
2. Portability
3. Ease of debugging
4. Ease of software development