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Create an ER diagram for each of the following descriptions:
(a) Each company operates four departments, and each department belongs to one company.
(b) Each department in part (a) employs one or more employees, and each employee works for one department.
(c) Each of the employees in part (b) may or may not have one or more dependants, and each dependant belongs to one employee.
(d) Each employee in part (c) may or may not have an employment history.
(e) Represent all the ER diagrams described in (a), (b), (c), and (d) as a single ER diagram.
document flowchart for the order processing system, and data flow diagram DFD at Level 0 for the order processing system.
Describe the role of databases and database management systems in managing organizational data and information. Recognize the historical development of database management systems and logical data models.
1. what is meant by data independence? explain your answer.2. identify two benefits of separating application software
question 1research the definition of a minimal cover. explain it in your own words and give an example. question
Kitchen Gadgets sells a line of high-quality kitchen utensils and gadgets. When customers place orders on the company's Web site or through electronic data interchange (EDI).
Principles of database design, as demonstrated by the database design for project - Designing and creating the following basic (master) tables for the application and "Employee" table, to hold the details of employees
Start the application to view the records contained in the dataset, and then stop the application.
As an external consultant, you have been hired by Overstock.com to evaluate the effectiveness of the processes they undertook in implementing its ERP system and to present your evaluation in report format to the CEO Patrick Byrne
you are the information security officer for a small pharmacy that has recently been opened in the local shopping mall.
Complete the 8- to 10-slide Microsoft® PowerPoint® presentation in which you explain the principles of database design and management. Include the following
Assume the data warehousing system is centralized, and implemented in the environment of Microsoft SQL Server 2012. As we discussed in the introduction, each store has its own local database.
Suppose that we have a ternary relationship R between entity sets A, B, and C such that A has a key constraint and total participation andB has a key constraint
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