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QUESTION 1 A project is proposed to design a database for online shopping, in which data about shops, products and suppliers will be collected. Each online shop has a unique ID, name and owner. Each Owner has a unique ID and name. Different shops could be owned by the same owner. Each shop may sell several products, and each product has a price. The same product could be available at several online shops, but the price may vary from one shop to another. Each product has a number, name and description and supplied by a supplier. The product name identifies a product uniquely within the supplier. Each supplier has unique name and specializes in at least one specific category (Hair Care, Skin Care, Home). In addition, shops may have several contracts with different suppliers. For each contract, the start and end dates of the contract are documented. It is important for each supplier to keep the number of running contracts. Design an ER diagram for the above scenario, showing all attributes, keys, cardinalities and participation constraints clearly. Note any unspecified requirements, and make appropriate assumptions to make the specification complete. Do not add any attributes of your own. Upload your ER model below, please note: • Make sure that the image is clear. Accepted File formats are: JPEG, PNG, or PDF, Other formats are not accepted. Do not include links to external resources. Clearly write your name and ID on the ER image. Otherwise, it will not be accepted.

QUESTION 1 A project is proposed to design a database for online shopping, in which data about shops, products and suppliers will be collected. Each online shop has a unique ID, name and owner. Each Owner has a unique ID and name. Different shops could be owned by the same owner. Each shop may sell several products, and each product has a price. The same product could be available at several online shops, but the price may vary from one shop to another. Each product has a number, name and description and supplied by a supplier. The product name identifies a product uniquely within the supplier. Each supplier has unique name and specializes in at least one specific category (Hair Care, Skin Care, Home). In addition, shops may have several contracts with different suppliers. For each contract, the start and end dates of the contract are documented. It is important for each supplier to keep the number of running contracts. Design an ER diagram for the above scenario, showing all attributes, keys, cardinalities and participation constraints clearly. Note any unspecified requirements, and make appropriate assumptions to make the specification complete. Do not add any attributes of your own. Upload your ER model below, please note: • Make sure that the image is clear. Accepted File formats are: JPEG, PNG, or PDF, Other formats are not accepted. Do not include links to external resources. Clearly write your name and ID on the ER image. Otherwise, it will not be accepted.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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QUESTION 1 A project is proposed to design a database for online shopping, in which data about shops, products and suppliers will be collected. Each online shop has a unique ID, name and owner. Each Owner has a unique ID and name. Different shops could be owned by the same owner. Each shop may sell several products, and each product has a price. The same product could be available at several online shops, but the price may vary from one shop to another. Each product has a number, name and description and supplied by a supplier. The product name identifies a product uniquely within the supplier. Each supplier has unique name and specializes in at least one specific category (Hair Care, Skin Care, Home). In addition, shops may have several contracts with different suppliers. For each contract, the start and end dates of the contract are documented. It is important for each supplier to keep the number of running contracts. Design an ER diagram for the above scenario, showing all attributes, keys, cardinalities and participation constraints clearly. Note any unspecified requirements, and make appropriate assumptions to make the specification complete. Do not add any attributes of your own. Upload your ER model below, please note: • Make sure that the image is clear. • Accepted File formats are: JPEG, PNG, or PDF, Other formats are not accepted. • Do not include links to external resources. • Clearly write your name and ID on the ER image. Otherwise, it will not be accepted.
Transcribed Image Text:QUESTION 1 A project is proposed to design a database for online shopping, in which data about shops, products and suppliers will be collected. Each online shop has a unique ID, name and owner. Each Owner has a unique ID and name. Different shops could be owned by the same owner. Each shop may sell several products, and each product has a price. The same product could be available at several online shops, but the price may vary from one shop to another. Each product has a number, name and description and supplied by a supplier. The product name identifies a product uniquely within the supplier. Each supplier has unique name and specializes in at least one specific category (Hair Care, Skin Care, Home). In addition, shops may have several contracts with different suppliers. For each contract, the start and end dates of the contract are documented. It is important for each supplier to keep the number of running contracts. Design an ER diagram for the above scenario, showing all attributes, keys, cardinalities and participation constraints clearly. Note any unspecified requirements, and make appropriate assumptions to make the specification complete. Do not add any attributes of your own. Upload your ER model below, please note: • Make sure that the image is clear. • Accepted File formats are: JPEG, PNG, or PDF, Other formats are not accepted. • Do not include links to external resources. • Clearly write your name and ID on the ER image. Otherwise, it will not be accepted.
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