Question: Name the three stages in the process of developing database systems. Summarize the tasks in each. What is a data model, and what is its

  • Name the three stages in the process of developing database systems. Summarize the tasks in each.
  • What is a data model, and what is its purpose?
  • Define the term degree of relationship. Give an example, other than the one used in this text, of a relationship greater than degree two.
  • Draw an IE Crows Foot E-R diagram for the entities DEPARTMENT and EMPLOYEE and the 1:N relationship between them. Assume that a DEPARTMENT does not need to have an EMPLOYEE but that every EMPLOYEE is assigned to a DEPARTMENT. Include appropriate identifiers and attributes for each entity.

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