Page Mapping and Page Rights Implementation

I have worked for page rights and page mapping implementation. We have logical unit rights, core logical unit mapping, core page category and core logical unit table. We have read, write, none access for each page. When we have ‘read’ access page will be displayed but all the fields will be disabled and button will be hidden. When we have ‘write’ access page will be displayed, fields will be editable and button will be displayed. We can perform save/edit and delete operation.