Question
Database System. make sure you follow the instruction. thanks question 1 You have just been hired as a consultant for a big airplane manufacturer. Impressed
Database System. make sure you follow the instruction. thanks
question 1
You have just been hired as a consultant for a big airplane manufacturer. Impressed by your background in databases, they want you to completely redesign their database system. Talking with the people in the company, you get the following information:
- The database contains information about employees, factories and parts.
- Each employee has a social security number (SSN), name and salary. An employee is uniquely identified by his or her SSN.
- Each factory has an id, name and a budget. The id uniquely identifies a factory.
- Each part has an id and a name. The id uniquely identifies a part.
- Each employee works in only one factory, a factory can employ many employees.
- Each part is manufactured in at least one factory. A factory can produce many different parts.
1.1) Draw the Entity-Relationship diagram for the above application. Again, if you need more space use the bottom of this Word Doc, or create another Word Doc and put it in there. Just remember to upload all the Word Docs to D2L.
1.2) Show the relational schema that corresponds to the above ER diagram. Make sure to clearly indicate primary keys and foreign keys. These would be the DDL needed to create the tables to support your ERD from 4.1.
1.3)Identify all relationships in the ERD that you created in part 4.1. For each relationship, write a business rule to describe the relationship. E.g. Student has one advisor, but an advisor may have multiple students.
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