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keys are noted in the superscript. Customer = {customerlID, firstName, lastName, income, birthDate} Account = {accNumber, type, balance, branchNumberFK-Branch Dwns = {customerIDFK-Customer accNumberFK-Account Transaction = {transNumber, accNumber"K-Account, amount} Employee = {ssn, firstName, lastName, salary, branchNumberFK-Branch SENEK-Emplovee budaot)

keys are noted in the superscript. Customer = {customerlID, firstName, lastName, income, birthDate} Account = {accNumber, type, balance, branchNumberFK-Branch Dwns = {customerIDFK-Customer accNumberFK-Account Transaction = {transNumber, accNumber"K-Account, amount} Employee = {ssn, firstName, lastName, salary, branchNumberFK-Branch SENEK-Emplovee budaot)

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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Suppose you work at a bank as a data analyst. Your main job is to analyze the data stored in their database. The database has five tables, whose schema is shown as below. Primary keys attributes are underlined and foreign keys are noted in the superscript. • Customer = {customerID, firstName, lastName, income, birthDate} • Account = {accNumber, type, balance, branchNumberFK-Branch • Owns = {customerlIDFK-Customer accNumberFK-Account • Transaction = {transNumber, accNumber"K-Account, amount} • Employee = {ssn, firstName, lastName, salary, branchNumberFK-Branch • Branch = {branchNumber, branchName, managerSSNFK-Employce, budget}
Transcribed Image Text:Suppose you work at a bank as a data analyst. Your main job is to analyze the data stored in their database. The database has five tables, whose schema is shown as below. Primary keys attributes are underlined and foreign keys are noted in the superscript. • Customer = {customerID, firstName, lastName, income, birthDate} • Account = {accNumber, type, balance, branchNumberFK-Branch • Owns = {customerlIDFK-Customer accNumberFK-Account • Transaction = {transNumber, accNumber"K-Account, amount} • Employee = {ssn, firstName, lastName, salary, branchNumberFK-Branch • Branch = {branchNumber, branchName, managerSSNFK-Employce, budget}
The answer to each question should be a single SQL query. • You must order each query as described in the question, order is always ascending unless specified otherwise • Every column in the result should be named. So if the query ask you to return something like income times 10, make sure you include an AS statement to name the column. • While your question will not be assessed on their efficiency, marks may be deducted if unnecessary tables are included in the query (e.g., including both Owns and Customer when you only require the customerID of customers who own accounts). • You may use some date functions in the following questions. In this homework, you should refer to the date and time functions of MySQL (which is also compatible with MariaDB). For more details, please refer to this page. • In this homework, you are NOT allow to use JOIN keyword or subqueries.
Transcribed Image Text:The answer to each question should be a single SQL query. • You must order each query as described in the question, order is always ascending unless specified otherwise • Every column in the result should be named. So if the query ask you to return something like income times 10, make sure you include an AS statement to name the column. • While your question will not be assessed on their efficiency, marks may be deducted if unnecessary tables are included in the query (e.g., including both Owns and Customer when you only require the customerID of customers who own accounts). • You may use some date functions in the following questions. In this homework, you should refer to the date and time functions of MySQL (which is also compatible with MariaDB). For more details, please refer to this page. • In this homework, you are NOT allow to use JOIN keyword or subqueries.
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