The default table type for MySQL is MyISAM.

It has table level locking, which means during an UPDATE, nobody can access any other record of the same table.

BDB

uses Page level locking,

and during an UPDATE, nobody can access any other record residing in the same database page of that table, until the locking transaction issues a COMMIT.

InnoDB

However, uses Row level locking.

Row level locking ensures that during an UPDATE, nobody can access that particular row, until the locking transaction issues a COMMIT.

Good article about php boot strapping at..
http://www.serversidemagazine.com/php/bootstrap-php-codeWhat to Bootstrap
It is a good plan to create a mockup of functionalities that we wish to assign and implement in our file.
Usually a bootstrap file contains the necessary source code, libraries and logic to start the entire application. From showing figuring out what page to show, how to communicate with the database, etc.

PHP Web Developers- Responsibilities-Dec 2008

Responsibilities:

Excellant opening -PHP MySQL- Aricent - Bangalore,Gurgaon

Mathi from Adecco India from Chennai.
We have retained with Aricent, Bangalore for following Job Positions.
Position : Sr Developer &Tech Lead
Client : Aricent
Location : Bangalore, Gurgaon
Experience : 6-10 yrs
Skill Set : PHP MySQL, Linux
--6-10 yrs of experience in developing PHP/MySQL based software on Linux
- -Must have experience in LAMP (Linux Apache MySQL PHP) experience

Winfoware Bangalore (PHP Lead)
Send ur CV ASAP to madhu@neweraindia.com
Send the details below along with CV
1 Current CTC
2 Expected
3 Notice Period
4 Dob
PHP
Position :: Team Lead
Job Description ::
->5 + years of hand on experience in open source application development, especially using scripting languages PHP,
->Good exposure to databases SQL Server, Oracle and MySQL, Postgress SQL Should have used open source frameworks like