Identify the primary and foreign keys for each relation. FirstNameTelephoneNameCPREmailLastNameOwnerPasswordCustomerNamePhoneMakeNameCPRJobIDTimeEmployeeOrderOnTimeDateCommentContainDishMNamePriceIntgredients TelephoneNameTypeameCPROwnerOwned byResturantHasNo.NameCPRTelephoneJobCityNo. of employeeIDMEmployeeHasBranchManaged byN.DishMOfferPriceIntgredients

For Customer Entity The primary key is "ID" And for one customer there can be multiple orders and so…

Answered: Identify the primary and foreign keys…

Engineering

Computer Science

Identify the primary and foreign keys for each relation.

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: Use normalization to decompose a relation with anomalies into well-structured relations?

A: Yes, Normalization are used to decompose a relationship with anamolies into a well structured…

Q: Display in product ID order the product ID and total amount ordered of that product by the customer…

A: SQL queryDerived table:Derived table is a table that is used to create a temporary table that is…

Q: explanation of three situations in which a relation's secondary key should be set in place of the…

A: The detailed solution is given in the next step.

Q: Assume the following relations, write the Relational Algebra equations: BOOKS(DocId, Title,…

A: Answer:

Q: For each of the relations created, indicate its normal form. If the relation is not in the 3NF,…

A: Normalization divides the table into smaller tables, removes any anomalies and links them using…

Q: A foreign key can refer to only the candidate key of another relation. (a) True (b)False

A: A foreign key is a field or a set of fields (columns) in a relational database table that is used to…

Q: The value of the candidate key cannot uniquely identify each tuple in a relation. (a) True (b)False

A: A candidate key is a set of one or more attributes (columns) in a relational database table that can…

Q: nformally describe the conditions to be met for a relation to be in Third Normal Form. Describe why…

A: 1. For a relation to be in 3NF, all the functional dependencies should be in form X->Y where X is…

Q: What problems might arise from vertically partitioning a relation?

A: Issues of vertical partitioning Vertical Partitioning: The separation of the logical_ relation…

Q: Three examples of when it might be appropriate to generate a surrogate key in place of the main key…

A: Main Key: In a relational database, a main key, also known as a primary key, is a column or set of…

Q: Consider the following 4 queries for relation ASG SELECT 3- ENO ASG FROM WHERE RESP=Value q2: SELECT…

A: It is the method of saving separate copies of a database on couple or more sites. It is a popular…

Q: Courses(CNum, topic, fee, facID) Faculty(FacID, LName, Office, Dept) Give a relational algebra…

A: Answer: I have given answered in the brief explanation

Q: Based on the above Relations/Tables, write description of violations of each of the 3-constrains in…

A: Domain Constraints: This constraint says that the value of the attribute must be available in the…

Q: NORMALIZATION The table above displays snippet of the monthly loan application report send by all…

A: Answer:

Q: Computer science Explain how the primary key in the same relation is referenced.

A: Introduction: The primary key constraint requires that each row in the relational database…

Q: 1: Draw ERD and Map to Relations. Step 2: Map the ERD you have created to relations…

A: Description: What Is ER Diagram: ER(Entity Relational), shows the relationship between one entity…

Q: In what normal form is the LOTS relation schema in the Figure with respect to the restrictive…

A: The relationship data, if it is in a first NF and all non key depend on primary attribute. Then the…

Q: The value of the candidate key cannot uniquely identify each tuple in a relation. True O False…

A: 1. The Value of the Candidate key is used to Identify the unique tuple in the relation. Your Answer…

Q: 2. What is the minimum level of normal form for a relation with only one non- prime attribute?

A: 1NF

Q: difference between Relation; Relationship

A: A relation refers to a single table in an RDBMS, whereas a relationship refers to a combination of…

Q: List three criteria that indicate that a surrogate key should be generated for the main key of a…

A: We have to write three criteria that indicate that a surrogate key should be generated for the main…

Q: What exactly does it mean to define a relation? Determine the aspects that contribute to the…

A: Start: A connection is the same thing as a table with two dimensions. It includes a certain…

Q: A foreign key can refer to only the candidate key of another relation. (a) True (b)False

A: The primary key of one table is referred to by another table's foreign key, which is an attribute of…

Q: How does the primary key of a relation relate to the interdependencies among its other attributes…

A: Answer: A primary key-foreign key relationship characterizes a one-to-numerous connection between…

Q: Table

A: A database is made out of multiple tables and each table holds the data.

Q: What general criteria, in light of these possible difficulties, determine whether it is appropriate…

A: Vertical partitioning issues Vertical Partitioning: Vertical partitioning is the division of logical…

Q: Discuss the differences between the candidate keys and the primary key of a relation. Explain what…

A: A primary key refers to a fixed of diverse attributes (or a single attribute) that assist in…

Q: Using normalisation, depict the relationship schema of the 2NF tables. State the respective primary…

A: Here two composite primary key [Order_Num,Supplier_Num] and the non key…

Q: Briefly discuss the properties of a relation.

A: A relation in database administration is a table with rows and columns. Understanding how a relation…

Q: Composite primary key can be defined at table level only. Select one: True False

A: As per the question asked the, the proper solution of the question is given in below step:

Q: List of three Conditions to check wheather a relation that is in the first normal form is also in…

A: Given: List of three Conditions to check wheather a relation that is in the first normal form is…

Q: When should you use a surrogate key instead of the primary key in a relation, and give three…

A: According to the specification of the surrogate key function provided by dbt, these keys are often…

Q: List three conditions that you can apply to determine whether a relation that is in first normal…

A: Given: List three conditions that you can apply to determine whether a relation that is in first…

Q: What are three reasons for replacing the primary key of a relation with a surrogate key?

A: Surrogate keys are artificial,system-generated identifiers used to replace the primary key of a…

Q: Identify if the following relation is in 1NF: STUDENT(StudentID, FirstName, LastName, (CourseID,…

Q: Step 1: Draw ERD and Map to Relations. Step 2: Map the ERD you have created to relations including…

A: Description: What Is ER Diagram: ER(Entity Relational), shows the relationship between one entity…

Q: What is the cardinality of a relation? What is the degree of a relation? What is a foreign key…

A: Introduction A database is a group of connected data that facilitates effective data retrieval,…

Q: the importance of normalization that EER conversion leads to a normalized set of relations.

A: Required: What is the importance of normalization that EER conversion leads to a normalized set of…

Concept explainers

Enhanced ER Model

The enhanced ER model is an abbreviation for Enhanced Entity-Relationship (EER) model. As you know, the entity-relationship (ER) model is a pictorial illustration of the relationship between various entities of a domain. In the case of a large amount of data with multiple interrelated entities, the ER diagrams become complex and tough to interpret. For such cases, the need for enhancement in the ER model was observed, and thus, the EER model was designed.

Question

Identify the primary and foreign keys for each relation.

FirstName
Telephone
Name
CPR
Email
LastName
Owner
Password
Customer
Name
Phone
Make
Name
CPR
Job
ID
Time
Employee
Order
OnTime
Date
Comment
Contain
Dish
M
Name
Price
Intgredients

Telephone
Name
Type
ame
CPR
Owner
Owned by
Resturant
Has
No.
Name
CPR
Telephone
Job
City
No. of employee
ID
M
Employee
Has
Branch
Managed by
N.
Dish
M
Offer
Price
Intgredients

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

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

To prevent modification anomalies, which of the following are created for a relation? Group of answer choices: 1. foreign keys 2. functional dependencies 3. referential integrity constraints 4. multi-valued attributes 5. primary keys 6. normal forms
Review the SaleItem relation below where ItemNumber plus OrderNumber is the primary key. What type of primary key does this relation have? SALEITEM (ItemNumber, OrderNumber, Quantity, Price) Group of answer choices Composite primary key Surrogate primary key Transitive primary key Alternate primary key
Explanation of three situations in which it is suitable to construct a substitute key for a relation's primary key
If you assume that a relation has no duplicate data, how do you know there is always at least one primary key?
When should you use a surrogate key instead of the main key in a relation, and provide three examples?
What are BCNF and 3NF? How to decompose a relation into BCNF? How to decompose a relation into 3NF?
In what three cases would it be preferable to use a foreign key instead of the primary key in a relation?
Determine the relationships among the four relations in Figure 7-17. List primary keys for each relation and any foreign keys necessary to establish the relationships and maintain referential integrity. Pay particular attention to the data contained in TUTOR REPORTS when you set up its primary key.
Write the relations clearly showing the Primary key bolded and underlined (e.g., CustomerId). Foreign key shown in italics (e.g., OrderNumber) and separately defined beneath the relation (e.g., ShoppingCart OrderNumber FK to Order OrderNumber)
In databases, the extension (contents) of a relation may vary, but the schema (structure) generally does not. Explain why?
In the definition of a relational database, explain what is meant by "normalized relations" ?
Explanation of three situations in which it is suitable to construct a substitute key for a relation's primary key