Note
Get the code with the following command:
git clone git://github.com/dzenanr/polymer_project_tasks.git
The model that forms the basis for this app is a typical many-to-many relationship between the two entry concepts: project and employee. A project has many employees, and an employee works on many projects. The many-to-many relationship between project and employee is normalized into two one-to-many relationships by introducing the intermediary task concept; a project consists of many tasks and an employee has many tasks: project (1-n) task and employee (1-n) task.
A project has a name (its ID), a description, and a tasks collection. An employee has an email (its ID), a lastName, and a firstName (both required) attributes, and a tasks collection. A task has a project, an employee, and a description: its ID is composed of the IDs of the project and employee, so an employee can only have, at the most, one task in a project. The code for this...