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CS348: Introduction to Database Systems Assignment 4 (Fall 2019)Database Systems代写 Overview: This assignment consists of two questions. As an aid to scheduling your work on this assignment,you should plan (due on Friday November 29 at 5pm via crowdmark)Overview: This assignment consists of two questions. As an aid to scheduling your work on this assignment, you should plan on spending three to five hours total on the questions.Assignment submission: A PDF file “a4.pdf” containing your answers to both questions:Page 1: An ER diagram, the first part of Question 1,Database Systems代写Page 2: The second part of Question 1,Pages 3, 4 and 5: SQL DDL defining the relational schema, the first part of Question 2, andPage 6: The second part of Question 2.Database Systems代写Question 1.Database Systems代写Assume your company is developing a digital camera online purchasing sys- tem for sale to camera stores. An initial analysis phase of the project has resulted in the following informal description of relevant data for the system.A store will be selling a variety of digital cameras and lenses. The digital cameras can have a combination of the followingAn ability to replaceCameras with an electronicCameras with an opticalCameraswith a “through the lens” optical  Database Systems代写Cameras with an optical

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