1- Look at the ThudTruckers file, and based on that description, draw the Context Data Flow Diagram. Include all external agents and say what their interaction is. 2- Look at the ThudTruckers file, and based on that description, draw me a DFD for the process "Select a truck for the customer and notify the owner". Include the agents, processes, and data stores that directly interact with this process. 3- Look at the ThudTruckers file, and based on that description, draw a 3NF ERD on a separate piece of paper. 4- Shown below is a proposed table structure for a different part of the ThudTruckers information system. Is this table in second normal form? If it is, what makes you think so? If it is not, list a table layout that will make it 2NF. (you don't have to include any of the data, just column names and key fields) Emp_ID (PK) Name Dept Salary Date of Hire 987 Mustrum Ridcully Sales $32,000 14 Oct 1995 598 Esmeralda Weatherwax Sales $36,000 14 July 1988 248 Artemesia Scud Sales $33,000 20 Feb 2000 5-