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3. The QR table records the workshop attendance of students. The BB table is a master table that holds student’s data in INFO151. The ZOOM table automatically records students who enter the workshop session with zoom. The requirements for each of the tables are listed in the requirement table below. (a) Write the DDL to create the tables with the suggested attributes, data types and constraints.  (b) What is a composite key? Is the primary key in the BB table a composite key or a surrogate key? Must the last name be unique for this type of primary key? (c) Discuss the limitation of using FName and LName as the primary key. (d) Is the relationship between BB and QR tables a one-to-one? If it is not, state the correct relationship.

3. The QR table records the workshop attendance of students. The BB table is a master table that holds student’s data in INFO151. The ZOOM table automatically records students who enter the workshop session with zoom. The requirements for each of the tables are listed in the requirement table below. (a) Write the DDL to create the tables with the suggested attributes, data types and constraints.  (b) What is a composite key? Is the primary key in the BB table a composite key or a surrogate key? Must the last name be unique for this type of primary key? (c) Discuss the limitation of using FName and LName as the primary key. (d) Is the relationship between BB and QR tables a one-to-one? If it is not, state the correct relationship.

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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3. The QR table records the workshop attendance of students. The BB table is a master table that holds student’s data in INFO151. The ZOOM table automatically records students who enter the workshop session with zoom. The requirements for each of the tables are listed in the requirement table below.

(a) Write the DDL to create the tables with the suggested attributes, data types and constraints. 

(b) What is a composite key? Is the primary key in the BB table a composite key or a surrogate key? Must the last name be unique for this type of primary key?

(c) Discuss the limitation of using FName and LName as the primary key.

(d) Is the relationship between BB and QR tables a one-to-one? If it is not, state the correct relationship.

 

BB QR Table Name and Data Types SID FName LName QID FName LName DateTime_IN Sid4 Mode ZOOM ZID FName LName DateTime_IN Date Time_OUT Duration INTEGER TEXT TEXT INTEGER TEXT TEXT TEXT INTEGER TEXT INTEGER TEXT TEXT TEXT TEXT INTEGER Primary Key FName, LName QID ZID Foreign Key None FName, LName FName, LName
Transcribed Image Text:BB QR Table Name and Data Types SID FName LName QID FName LName DateTime_IN Sid4 Mode ZOOM ZID FName LName DateTime_IN Date Time_OUT Duration INTEGER TEXT TEXT INTEGER TEXT TEXT TEXT INTEGER TEXT INTEGER TEXT TEXT TEXT TEXT INTEGER Primary Key FName, LName QID ZID Foreign Key None FName, LName FName, LName
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