ER Diagram of an University scribd pdf free download

Sheikh Moidin. Shyamal Das. Kyal Owen. David Zeltner. Zeleke Taemu. Wynster Suemitsu Calonia. Melanie Pacleba Ordanel. Sergio Grfk. More From Saddam Hussain. Aravind Kb. Kishore Krish. To learn more, view our Privacy Policy. To browse Academia. Log in with Facebook Log in with Google. Remember me on this computer. Enter the email address you signed up with and we'll email you a reset link.

Symbols at the ends of the relationship lines indicate the optionality and the cardinality of each relationship. These are depicted in the ERD with multiple relationship lines connecting the two entities salesperson EMPLOYEE CLIENT customer service rep The diagram above indicates that an employee may be the salesperson assigned to zero or many clients, and an employee may be the customer service representative for zero or many clients.

For example, employees can supervise other employees. There are times when it is convenient to depict relationships that apply to an entire class of things, as well as depict relationships that apply only to certain types of the larger class.

If an entity instance may have either one relationship or another, but not both, the constraint may be modeled with an exclusive-or relationship, represented as a tree with a solid dot where the tree branches.

Derived attribute A derived attribute is based on another attribute. Single-valued attributes are attributes that only have a single value for a particular entity. More Examples flow chart is a graphical or symbolic representation of a process.

Ramkumar Puthukode. Acharya Krishna. Polinho Donacimento. Muhammad Rizki. Chandrashekhar Katagi. C Lavanya. Mehsara Irfan. Anitahsri Purusothman. Harold Lucero. Breadley Nusawakan.

Rupesh Shrestha. Syafiq Ahmad. Simran Chauhan. Adid Rachmadiansyah. More From LaxmiPant. Architectural Design in Software Engineering Se10 Atinek Dubey. Popular in Technology General. Kasi Xswl. Bobby Chipping. Diego Franco. Shamsulamri Samsir. Ankita Sharma. Waqas Mahmood. Perry Solano. Cliff Evans. Md Saidur Rahman Kohinoor. Rishabh Mehta. AImhee Martinez. Popular in Areas Of Computer Science.

Hemant Bang. Akshay Madan. Pham Long. Otto Federico Wald. Moises Gil Solorio. Jump to Page. Search inside document. Creating ER Diagram A university registrar office maintains data about the following entities: 1.

Each car has associated with it zero to any number of recorded accidents. Sanjeev Sharma. Pilar R. Ravi Ranjan. Yamunaji Josip Karuza.