Starting with a context diagram, draw as many nested DFDs as you consider necessary to represent all of the details of the engineering document management system described in the following narrative. You must draw at least a context diagram and a level-0 diagram. In drawing these diagrams, if you discover that the narrative is incomplete, make up reasonable explanations to complete the story. Provide these extra explanations along with the diagrams. Projects, Inc. is an engineering firm with approximately 500 engineers that provide mechanical engineering assistance to organizations, which requires managing many documents. Projects, Inc. is known for its strong emphasis on change management and quality assurance procedures. The customer provides detailed information when requesting a document through a web portal. An engineer is assigned to write the first draft of the requested document. Upon completion, two peer engineers review the document to ensure that it is correct and meets the requirements. These reviewers may require changes or may approve the document as-is. The document is updated until the reviewers are satisfied with the quality of the document. The document is then sent to the customer for approval. The customer can require changes or accept the document. When the customer requires changes, an engineer is assigned to make the changes to the document. When those changes are made, two other engineers must review those changes. When those reviewers are satisfied with the changes, the document is sent back to the customer. This may happen through several iterations until the customer is satisfied with the document.
