Covert Access DB to MySQL/PHP/ExtJs

We are a school which currently uses an access database for general administration. Due to the limitations of access we now want to move to a web based solution. We have chosen to use MySQL, PHP, and ExtJs. The task contains the following key points and requirements [login to view URL] all Access Jet Database tables and data to MySQL [login to view URL] a layout in an ExtJs viewport with a Border layout – in the North is the user information panel such as logout, in the center is a Tabpanel with 4 panels. The panels are named Sales, Employees, Class History, and POS [login to view URL] Student and class management functionality including adding and removing students from classes. [login to view URL] Employee management and lesson tracking functionality [login to view URL] Class History and class tracking functionality [login to view URL] POS and payment functionality [login to view URL] user logging in and out All functionality is present in the current Access Database. Also the design is very clear and already finished. Complete details and JPG’s can be found in the zip file attached. Please reply with the answer to the following question in your bid to show you have read and understand this. What is the URL of the ExtJs API?