Consider the following table in a relational database.www.wLast NameSmithRankRoomShiftManagerMorningAfternoon234JonesSmithCustodian33Custodian33EveningMorningDoeClerical222According to the data shown in the table, which of the following could be candidate keys of the table?a) {Last Name}b) {Room}c) {Shift}d) {Rank, Room}e) {Room, Shift}

Candidate key is the set of attributes which can refer each row uniquely in table

Answered: According to the data shown in the…

Engineering

Computer Science

According to the data shown in the table, which of the following could be candidate keys of the table?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Related questions

Q: StayWell has increased the monthly rent of each large property by $150. Update the monthly rents in…

A: Actually, database is a used to stores the data.

Q: List unique first (first_name) and last names (last_name) of customers (CUSTOMER table) who rented a…

A: In this question, we are asked to write a SQL query to fetch the unique first and last names who…

Q: Use the Committee table and create a query that displays the following output: Name FullAddress…

A: The query is given as per mysql in the next step:

Q: What does it mean to say that the select statements for two tables are union compatible? Question…

A: Relational algebra operators: The relational algebra operators that can be applied to a pair of…

Q: Given the table customers which contains columns customer_id, first_name, last_name, and state, and…

A: SELECT C.LASTNAME, A.STATE, A.ZIP FROM CUSTOMER AS C INNER JOIN ADDRESS AS A on…

Q: Explain the difference between main key, candidate key, and superkey..

A: Differentiation between main key, candidate key, and super key A super key is any collection of…

Q: Write a query which set the following constraints in Customers table (in MySQL). First Name and…

A: We are going to add constraints to the columns in the table Customers. First we will add constraint…

Q: Design a query of Stores with the following: Store Name, Store Size, Sum of order amounts, Percent…

A: JOIN Based on a common column between two or more tables, a JOIN clause is used to merge rows from…

Q: Problem 7 Write a query to produce the total number of hours and charges for each of the projects…

A: Here you have simply used the ROUND(value,2) function. This will simply round the value to 2 places…

Q: Using the software.subscription table, pull all columns for subscriptions that have been cancelled.…

A: For the given database, if the user wants to select all the columns by giving the condition that the…

Q: Some rows of a User table are shown below: User ucode name phone scode 7 Alex 847 - 3902…

A: Names and phone numbers are among the details about different users that are included in the User…

Q: _number) FROM participated, owns, person WHERE owns.driver_id = person.driver_id AND person.name =…

A: The solution is given below:

Q: Write a query to get the number of different types of jobs available in the university table.…

A: Functions used in Query: The LIKE operator is used to search for a specified pattern in a column.…

Q: The data in this table is as follows: Team Opponent Dragons Carp Bay Stars Marines Ham Fighters…

A: As the query suggested it will select the team from the table score where the corresponding value of…

Q: When creating a table in SQL, you must specify whether the column is NULL or NOT NULL. a. True…

A: SQL

Q: Select clause and from clause: Display the columns specified above in the problem statement from…

A: Write a query to display the author ID, first name, last name, and year of birth for all authors…

Q: How can you pick partial table contents?

A: Solution:- We can pick partial table contents by naming the desired fields and by placing…

Q: Here is some information about the size of two tables: Table 1: 10 columns 100,000 rows Table 2:…

A: - We need to give the maximum number of rows and columns from union of tge tables provided.

Q: What is the primary key, candidate keys, foreign keys, and non-key columns in these two tables?

A: All the other attributes other than the key attribute are the non-key attributes. A candidate key is…

Q: Please help with the following What is a valid GROUP BY clause for the following SELECT list?…

A: Given: Please help with the following What is a valid GROUP BY clause for the following SELECT…

Q: 3. Using the EMPLOYEE table that already exists, use a subquery to insert the remaining rows from…

A: Using the EMPLOYEE table that already exists, use a subquery to insert the remaining rows from the…

Q: WEEK 9 SQL ASSIGNMENT Part I: Complete the following exercise: Create the following table with…

A: As per our guidelines, we are supposed to answer only 1st three parts. Kindly repost the remaining…

Q: Which of the following tables is followed by the outer join operator (+) in an OUTER JOIN query?

A: Given; Which of the following tables is followed by outer join operator in an OUTER JOIN query

Q: The sales person gets a bonus pay if their amount exceeds a certain tier level for each year. Write…

A: Given: Here we can see all the required tables salesman, orders, training, bonus_pay we need to use…

Q: Write a sql query to create the given table.

Q: What is the primary key for the APARTMENTS table? (It may be a composite key involving 2 or more…

A: The question asks to identify the primary keys and foreign keys for the "APARTMENTS" and "RENTERS"…

Q: Write a sql query to create the given table.

A: Question. Write a sql query to create the given table. Answer. To create a table in SQL we'll use…

Q: Based on the following SQL statement: SELECT acct_id, balance FROM Account WHERE balance < 0 AND…

A: Number list = [12,9,2,5,-7,3]. Bubble sort: In bubble sort works by repeatedly swapping the adjacent…

Q: Given the following ERD, which of the following joins produce the same results. You can assume the…

A: Here, there are three relations named A, B, and C which are shown using the ERD. In this ERD,…

Q: Using the Winners table from Figure 12-2, write a parameter query that selects theActor and Actress…

A: A query that has a parameter marker instead of a value of criteria is called as parameter query. The…

Q: Which group function can be used to perform a count that includes NULL values?

A: Group by functions are : SUM ( [ALL | DISTINCT ] expression ) AVG ( ALL | DISTINCT ] expression )…

Q: term factor Y power atom X NUM $

A: SOLUTION - Term=factor Y Y=*factor|ε Factor=~factor|power Power=atom X X=**power| ε Atom=NUM…

Q: In the SQL Oracle Application, Within the Employees table, each manager_id is the manager of one or…

A: Answer: SELECT manager_id, job_id, SUM(salary) "total salary", GROUPING(manager_id),…

Q: I need help with this SQL query: Write a MySQL statement to create a table named jobs including…

A: Hello student. Warm welcome from my side. Hope you are doing great. I will try my best to answer…

Q: By using oracle Sequence, you can generate a numeric value that can be assigned to any column in any…

A: I have given an answer in step 2.

Q: The 'customer' table contains ten columns but no rows. The table is then updated with 10 new rows…

A: Degree of a table in SQL: The number of attributes or columns in a relation is referred to as the…

Q: How do we avoid getting duplicate entries in a query?

Q: Below are some rows of the PROVIDERS table for a factory: PCODE 10192 98411 0489035 NAME Hans, Inc.…

A: Hello studentIn SQL querying, crafting precise SELECT statements is crucial to retrieving accurate…

Q: ansactions sender receiver amount transaction_date 10 2 2-12-20 2-13-20 2-13-20 15 20 25 20 2-14-20…

A: Here have to determine sql query for creating table.

Q: when we want to change the data type in a table, how do we do that?

A: When we want to update the data type in a table we use alter command.

Q: Some rows of the table STUDENT are shown below: CODE NAME DEPARTMENT GPA YEAR 291 ALEX PSI…

A: To find thе dеpartmеnts with a GPA avеragе in thе yеar 2004 grеatеr than thе global GPA avеragе,…

Q: Which of the following SELECT statements lists only the book with the largest profit? (refer to the…

A: Solution: It is being asked to choose SELECT statement which lists book with the largest profit but…

Q: Which statement it true about the following table? Author_ID Author_Name Book_ID Book_Title 1…

A: Based on the provided information, it appears that the table does not fully conform to the rules of…

Concept explainers

Single Table

In a database management system, a single table is designed to obtain data of heterogeneous items. A single-table design with DynamoDB resolves the issue of raising multiple requests for the relevant data of an entity.

Question

Consider the following table in a relational database.
www.w
Last Name
Smith
Rank
Room
Shift
Manager
Morning
Afternoon
234
Jones
Smith
Custodian
33
Custodian
33
Evening
Morning
Doe
Clerical
222
According to the data shown in the table, which of the following could be candidate keys of the table?
a) {Last Name}
b) {Room}
c) {Shift}
d) {Rank, Room}
e) {Room, Shift}

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Candidate Key

VIEW

Answer

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

Some rows of the STUDENT table are shown below: CODE NAME GPA YEAR 291 ALEX 3.1 2 938 MICHELE 2.3 1 931 JHON 3.3 1 182 JOE 3.4 2 190 REY 2.0 2 330 RON 3.9 3 Which best describes the result of the query below? SELECT YEAR, AVG(GPA) FROM STUDENT WHERE GPA > 2.0 GROUP BY YEAR a. The average maximum GPA of all the students in each year. b. The year of the student with the maximum GPA. c. The average GPA of students with a GPA higher than 2.0 each year. d. The average GPA of the students with a GPA higher than 2.0.
Correct Query from table given.
You need to calculate the total of all salaries in the employee table. Which group funciton should you use ? a. TOTAL b. SUM c. MAX d COUNT Just answer SQL)
Use single-row subquery in a HAVING clause. List customer numbers of customers who paid total amount (sum of quantity * paideach) of their orders less than the average of total amount of orders that paid by all customers. Include the following columns in the result. a. Customer Numberb. Total AmountHint: The subquery returns the average total amount that paid by all customers. We need to join two tables in this subquery and use group function to find average of total amount based on the number of customers.
Determine the results of the below query. Explain how the result was calculated
SQL The sales person gets a bonus pay if their amount exceeds a certain tier level for each year. Write a query that shows who would be getting a bonus and for how much. 2. How many rows will it return and with what data?
What is the primary key for the table "movies"? Options: . title • movie_key film_id ▪ movie_id · Solution In [ ]: %%sql
Could you do typing the query here please?
How do we join multiple tables in a SELECT statement? Give an example.
Consider this table. The table name is Employees. Sql
Write a sql query to create the given table.