Your task is to design a 'Company' database capable of storing information about EM- PLOYEE(S), DEPARTMENT (s), and PROJECT(s). Knowing that: • We store each employee's name (composite attribute - social security number, address, salary, and telephone number. An employee is assigned to one department, but may work on several projects which are not necessarily controlled by the same department. We keep track of the number of hours that an employee works on each project - • Each department has a unique name, ja unique number, a single location, and a particular employee who manages - the department. We keep track of the start date - employee began managing the department when that . A department controls a number of projects, each of which has a unique name, a unique number and several locations (a) (b) Give the ER diagram and schema Which type of relationships do you have? Discuss both the cardinality and the partici- pation constraints
Your task is to design a 'Company' database capable of storing information about EM- PLOYEE(S), DEPARTMENT (s), and PROJECT(s). Knowing that: • We store each employee's name (composite attribute - social security number, address, salary, and telephone number. An employee is assigned to one department, but may work on several projects which are not necessarily controlled by the same department. We keep track of the number of hours that an employee works on each project - • Each department has a unique name, ja unique number, a single location, and a particular employee who manages - the department. We keep track of the start date - employee began managing the department when that . A department controls a number of projects, each of which has a unique name, a unique number and several locations (a) (b) Give the ER diagram and schema Which type of relationships do you have? Discuss both the cardinality and the partici- pation constraints
Database Systems: Design, Implementation, & Management
11th Edition
ISBN:9781285196145
Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Publisher:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Chapter10: Transaction Management And Concurrency Control
Section: Chapter Questions
Problem 1P
Related questions
Question
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 4 steps with 4 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Recommended textbooks for you
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781285196145
Author:
Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Publisher:
Cengage Learning
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781285196145
Author:
Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Publisher:
Cengage Learning