Create an ER diagram based on the following rules:
A piano manufacturer wants to keep track of...
Computers and Technology, 03.03.2020 02:12 deezy2x
Create an ER diagram based on the following rules:
A piano manufacturer wants to keep track of all the pianos it makes individually. Each piano has an identifying serial number and a manufacturing completion date. Each instrument represents exactly one piano model, all of which have an identification number and a name. In addition, the company wants to maintain information about the designer of the model. Over time, the company often manufactures thousands of pianos of a certain model, and the model design is specified before any single piano exists.
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