EBK SYSTEMS ANALYSIS AND DESIGN
EBK SYSTEMS ANALYSIS AND DESIGN
11th Edition
ISBN: 8220102795068
Author: ROSENBLATT
Publisher: CENGAGE L
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Chapter 9, Problem 3DT
Program Plan Intro

Identify the possible candidate keys, the likely primary key, a probable foreign key, and a potential secondary key for the given situation.

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If an employee can work for only one department and a department can have many employees (one to many relationship). Which answer the relationship table "work" that has the best values to describe the relationship between employee and department? The employee table has two columns (eid, name) with records ('E1','A'), ('E2','B'), ('E3','C'). The department table has two columns (did, name) with records ('D1','X'), ('D2','Y'), ('D3', 'Z'). work(eid, did) with values ('E1','D1'), ('E1','D2'), ('E2,'D2'). work(eid, did) with values ('E1','D1'), ('E2','D2'), ('E3,'D2'). work(eid, did) with values ('E1','D1'), ('E2','D2'), ('E2,'D3'). work(eid, did) with values ('E1','D1'), ('E2','D2'), ('E3,'D3').
ERD for Sales Order Step 1. Draw an ER diagram for the story below. Use the ERD tool only. Draw Relations in Oracle notation. Please read the story carefully. Use the mentioned Entities ONLY. The company sells various Products to Customers. The Sales Agent books an Order. A new order is created for each Product. While booking an Order, Agent records Order Date, Product, Customer, Product Quantity, and Sales Agent. Product has Description and UnitPrice. Each Agent reports to a Manager. A Manger has a Nameand Commission Percent. NOTE: Total Amount is a calculation, doesn't belong to Order Step 2. Add Attributes to Sales Order ERD based on Rules of Normalization.
Closely examine the following tables and use it to answer the questions that follow: department course student_type student_category Student registration registration_type Suppose that the following are true: - all id column are primary keys in whichever table they are - the dept_id in course table is foreign key that is referencing the id column in the department table - the foreign keys stud_type_id, stud_cat_id in the student table are referencing the id columns in the student_type and student_category tables respectively. - the coursecode and stud_id columns in the registration table are foreign keys in the course and student tables respectively. 1. Design an Entity Relationship Diagram for the system above. 2. Write query that would return the names and contacts of all Local students. 3. Write a query that would return names, contact and locations of all departments that has a location text with Ave 3 as part of it. [hint: use the LIKE clause with “_” or “%”] 4. What would…
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