An investment company wants to create a database system to manage its data. The company manage several projects. There are several investors. The investor can invest in several projects. A project can have several investors, so that a percentage of each investor is specified in each project. The project has a name, type, start date, duration and director.

You are required to:

• Construct an ERD for the investment company database. The ERD must show the cardinality ratio.
• Identify the attributes you need to create the company database and show them using the ERD.