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Consider a PUBLICATION COMPANY database in which data requirements are summarized as follows: Every topic should contain name, code and research area. The topics can have several reports and the reports may contain several topics in them. The report should have a title. A department can publish more than one report. A report can be published only by a single department. The department must have its name and address. Reports can be written by many contractors and contractors can write many reports. Each contractor should have name and address. A publication can include several topics and a topic can be present in more than one publications. A publication must have its title and code. One department can have many publications and a publication can be made only by one department. Construct an E-R diagram (based on a Chen's model) to represent the above requirements. Make sure you include all appropriate entities, relationships, attributes, and cardinalities.

Consider a PUBLICATION COMPANY database in which data requirements are summarized as follows: Every topic should contain name, code and research area. The topics can have several reports and the reports may contain several topics in them. The report should have a title. A department can publish more than one report. A report can be published only by a single department. The department must have its name and address. Reports can be written by many contractors and contractors can write many reports. Each contractor should have name and address. A publication can include several topics and a topic can be present in more than one publications. A publication must have its title and code. One department can have many publications and a publication can be made only by one department. Construct an E-R diagram (based on a Chen's model) to represent the above requirements. Make sure you include all appropriate entities, relationships, attributes, and cardinalities.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Consider a PUBLICATION COMPANY database in which data requirements are summarized as follows: Every topic should contain name, code and research area. The topics can have several reports and the reports may contain several topics in them. The report should have a title. A department can publish more than one report. A report can be published only by a single department. The department must have its name and address. Reports can be written by many contractors and contractors can write many reports. Each contractor should have name and address. A publication can include several topics and a topic can be present in more than one publications. A publication must have its title and code. One department can have many publications and a publication can be made only by one department. Construct an E-R diagram (based on a Chen's model) to represent the above requirements. Make sure you include all appropriate entities, relationships, attributes, and cardinalities.
Transcribed Image Text:Consider a PUBLICATION COMPANY database in which data requirements are summarized as follows: Every topic should contain name, code and research area. The topics can have several reports and the reports may contain several topics in them. The report should have a title. A department can publish more than one report. A report can be published only by a single department. The department must have its name and address. Reports can be written by many contractors and contractors can write many reports. Each contractor should have name and address. A publication can include several topics and a topic can be present in more than one publications. A publication must have its title and code. One department can have many publications and a publication can be made only by one department. Construct an E-R diagram (based on a Chen's model) to represent the above requirements. Make sure you include all appropriate entities, relationships, attributes, and cardinalities.
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