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store staff 1(0) 1(0) customer 1(0) has has has 1(0) phone phone_id 1-1(1) country_code M-1(1) 1(0) phone_number M-1(1) phone_type M-1(0) 1(0) The diagram uses Sakila naming conventions. Follow the Sakila conventions for your table and column names: • All lower case • Underscore separator between root and suffix • Foreign keys have the same name as referenced primary key Write CREATE TABLE and ALTER TABLE statements that: 1. Implement the entity as a new phone table. 2. Implement the has relationships as foreign keys in the Sakila customer, staff, and store tables. 3. Remove the existing phone column from the Sakila address table. Step 2 requires adding a foreign key constraint to an existing table. Ex:

store staff 1(0) 1(0) customer 1(0) has has has 1(0) phone phone_id 1-1(1) country_code M-1(1) 1(0) phone_number M-1(1) phone_type M-1(0) 1(0) The diagram uses Sakila naming conventions. Follow the Sakila conventions for your table and column names: • All lower case • Underscore separator between root and suffix • Foreign keys have the same name as referenced primary key Write CREATE TABLE and ALTER TABLE statements that: 1. Implement the entity as a new phone table. 2. Implement the has relationships as foreign keys in the Sakila customer, staff, and store tables. 3. Remove the existing phone column from the Sakila address table. Step 2 requires adding a foreign key constraint to an existing table. Ex:

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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4.13 LAB - Implement strong entity (Sakila) Implement a new strong entity phone in the Sakila database. Attributes and relationships are shown in the following diagram: store staff ● 1(0) ● 1(0) customer 1(0) has. has has. phone phone_id 1-1(1) country_code M-1(1) 1(0) phone_number M-1(1) phone_type M-1(0) 1(0) The diagram uses Sakila naming conventions. Follow the Sakila conventions for your table and column names: . All lower case • Underscore separator between root and suffix Foreign keys have the same name as referenced primary key Write CREATE TABLE and ALTER TABLE statements that: 1. Implement the entity as a new phone table. 2. Implement the has relationships as foreign keys in the Sakila customer, staff, and store tables. 3. Remove the existing phone column from the Sakila address table. Step 2 requires adding a foreign key constraint to an existing table. Ex: 1(0) ALTER TABLE customer ADD FOREIGN KEY (phone_id) REFERENCES phone (phone_id) ON DELETE SET NULL ON UPDATE CASCADE; Specify data types as follows: • phone_id, phone_number, and country_code have data type INT. phone_type has date type VARCHAR(12) and contains strings like 'Home', 'Mobile', and 'Other'. Apply these constraints: • NOT NULL constraints correspond to cardinalities on the diagram above. • Foreign key actions are SET NULL for delete rules and CASCADE for update rules. Specify a suitable column as the phone table primary key.
Transcribed Image Text:4.13 LAB - Implement strong entity (Sakila) Implement a new strong entity phone in the Sakila database. Attributes and relationships are shown in the following diagram: store staff ● 1(0) ● 1(0) customer 1(0) has. has has. phone phone_id 1-1(1) country_code M-1(1) 1(0) phone_number M-1(1) phone_type M-1(0) 1(0) The diagram uses Sakila naming conventions. Follow the Sakila conventions for your table and column names: . All lower case • Underscore separator between root and suffix Foreign keys have the same name as referenced primary key Write CREATE TABLE and ALTER TABLE statements that: 1. Implement the entity as a new phone table. 2. Implement the has relationships as foreign keys in the Sakila customer, staff, and store tables. 3. Remove the existing phone column from the Sakila address table. Step 2 requires adding a foreign key constraint to an existing table. Ex: 1(0) ALTER TABLE customer ADD FOREIGN KEY (phone_id) REFERENCES phone (phone_id) ON DELETE SET NULL ON UPDATE CASCADE; Specify data types as follows: • phone_id, phone_number, and country_code have data type INT. phone_type has date type VARCHAR(12) and contains strings like 'Home', 'Mobile', and 'Other'. Apply these constraints: • NOT NULL constraints correspond to cardinalities on the diagram above. • Foreign key actions are SET NULL for delete rules and CASCADE for update rules. Specify a suitable column as the phone table primary key.
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