Draw a Context Diagram and a Diagram 0 Data Flow Diagram that represents the information system at a typical library.

1.)Draw a Context Diagram and a Diagram 0 Data Flow Diagram that represents the information system at a typical library. 2.)On the internet, locate at least three firms that offer CASE tools as shareware or free, public domain software. Describe what you found. 3.)Explore the use of structured English to describe processes in fields other than systems analysis. 4.)Create a decision table with three conditions. You can make one up, or use a scenerio from evryday life. Either way be sure to show all possible outcomes. 5.)The data flow symbols were designed by ED Yourdon, a well-known IT author, lecturer, and consultant. Many IT professionals consider him to be among the most influential men and women in the software field. Learn more about Mr. Yourdon by visiting his website at www.yourdon.com, and write a brief review of his work.