Database Systems: Design Implementation & Management
11th Edition
ISBN: 9781305850378
Author: Coronel
Publisher: Cengage
expand_more
expand_more
format_list_bulleted
Question
Chapter 3, Problem 11P
Program Plan Intro
Primary Key:
A Primary Key in a
Example:
Students in Universities are assigned a unique registration number.
Therefore, in a STUDENT database table, the attribute “reg_no” acts as primary key.
Foreign Key:
Foreign Key is a column in a relational database table which provides a relation between two tables. It provides a cross reference between tables by pointing to primary key of another table.
Example:
In STUDENT database table, the attribute “reg_no” acts as primary key and in COURSE database table in which the student selects his or her course, the same “reg_no” acts as foreign key for the STUDENT table.
One to Many Relationship:
When one record in a database table is associated with more than one record in another table, the relationship between the two tables is referred as one to many relationship. It is also represented as1: M relationship. This is the opposite of many to one relationship.
ENTITY- RELATIONSHIP DIAGRAM (ERD):
Entity- Relationship Diagram is also known as ER Diagram. It is used to define the conceptual view of the database as viewed by the end user. It is used to depict the database’s main components: entities, relationships and attributes.
CROW FOOT ERD:
The Crow Foot ERD is an Entity Relationship Diagram which is used to represent the cardinalities present in the basic ER diagram. It is used to represent the relationships present between two tuples or tables present in the database.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Create a scatterplot in Excel of age and years worked.Comment on what this scatterplot tells you about the data.
Normalize the following form into UNF 1NF, 2NF and 3NF. Show primary keys and foreign
keys for all the normalized tables (from 3NF).
Employee Task Record Form
EmployeelD
: 587
Employee Name: Smith
Department ID: D1
DeparmentName : IT
Task ID
Task Name
Duration
Supervisor ID | Supervisor Name Emp_TaskJoin_Date
Designing
Drawing
Reporting
T1
70hrs
S1
Khalfan
12/12/2019
T2
56hrs
S2
Fatma
01/10/2020
T3
60hrs
S3
Haitham
11/11/2020
please use the picture to answer the following question
Normalize below user view to the third normal form. Show all steps (UNF, 1NF, Dependencies, 2NF, 3NF).
Chapter 3 Solutions
Database Systems: Design Implementation & Management
Ch. 3 - What is the difference between a database and a...Ch. 3 - Prob. 2RQCh. 3 - Prob. 3RQCh. 3 - What are the requirements that two relations must...Ch. 3 - Which relational algebra operators can be applied...Ch. 3 - Explain why the data dictionary is sometimes...Ch. 3 - A database user manually notes that The file...Ch. 3 - Prob. 8RQCh. 3 - Prob. 9RQCh. 3 - Prob. 10RQ
Ch. 3 - Create the table that results from applying a...Ch. 3 - Create the table that results from applying an...Ch. 3 - Using the tables in Figure Q3.13, create the table...Ch. 3 - Prob. 14RQCh. 3 - Prob. 15RQCh. 3 - Prob. 16RQCh. 3 - Identify and describe the components of the table...Ch. 3 - Identify the primary keys. FIGURE Q3.22 THE...Ch. 3 - Identify the foreign keys. FIGURE Q3.22 THE...Ch. 3 - Create the ERM. FIGURE Q3.22 THE CH03_THEATER...Ch. 3 - Create the relational diagram to show the...Ch. 3 - Prob. 22RQCh. 3 - What would be the conceptual view of the INDEX...Ch. 3 - Prob. 1PCh. 3 - Prob. 2PCh. 3 - Do the tables exhibit referential integrity?...Ch. 3 - Describe the type(s) of relationship(s) between...Ch. 3 - Prob. 5PCh. 3 - Prob. 6PCh. 3 - Prob. 7PCh. 3 - Prob. 8PCh. 3 - Create the relational diagram to show the...Ch. 3 - Prob. 10PCh. 3 - Prob. 11PCh. 3 - Create the relational diagram to show the...Ch. 3 - Prob. 13PCh. 3 - Do the tables exhibit referential integrity?...Ch. 3 - Prob. 15PCh. 3 - Prob. 16PCh. 3 - For each table, identify the primary key and the...Ch. 3 - Prob. 18PCh. 3 - Do the tables exhibit referential integrity?...Ch. 3 - Identify the TRUCK tables candidate key(s). FIGURE...Ch. 3 - For each table, identify a superkey and a...Ch. 3 - Prob. 22PCh. 3 - Prob. 23PCh. 3 - Prob. 24PCh. 3 - Create the ERD. (Hint: Look at the table contents....Ch. 3 - Prob. 26PCh. 3 - Prob. 27PCh. 3 - Prob. 28PCh. 3 - Create the table that would result from applying...Ch. 3 - Create the table that would result from applying...Ch. 3 - Create the table that would result from applying a...
Knowledge Booster
Similar questions
- Add two columns to the EMPLOYEES table. One column, named EmpDate, contains the date of employment for each employee, and its default value should be the system date. The second column, named EndDate, contains employees date of termination.arrow_forwardUpdate the VID_STATUS attribute of the VIDEO table using a subquery to set the VID_STATUS to OUT for all videos that have a null value in the DETAIL_ RETURNDATE attribute of the DETAILRENTAL table.arrow_forwardAdd to the PADDLING table a new character column named DIFFICULTY_LEVEL that is three characters in length. Then set the default difficulty level value for all rows to the value MOD.arrow_forward
- Table Employee (eid,ename, manager_id,edptid) Show employee with his/her manager name.arrow_forwardA: Create a spreadsheet that calculates the costs of shipping to Portland and Riverside by pallets based on the frequency distribution used in the histograms used in Milestone One. (Link the cost data to the data in the Costs&Distances tab.) State the rationale you used. Size of Shipment Tranport cost Cost per Pallet -requency Cost of Shipments Size of Shipment Tranport cost Cost per Pallet Frequency Cost of Shipments 6 12 18 24 48 72 3 6 12 18 24 48 72arrow_forwardCan someone help? Thank you in advance The InstantRide User Satisfaction team requires the average and maximum number of rides users have taken so far with InstantRide. In addition, they would like to know the total number of travels. However, they need these details with the corresponding column names Average, Maximum and Total by using the AVG, MAX and SUM functions. In order to accomplish this, you will first need to create a derived table from the TRAVELS table to pass the TRAVEL_ID count to the three mathematical functions.arrow_forward
- - The HR department needs a report to display employee information as shown from the job_history table. The months worked is the number of months from the start date to the end date. Only list those employees whose months worked is an even number. Order by months worked descendingarrow_forwardAfter converting the ERD to a table design, what fields will be present in the Contracts table? Indicate the primary key of the table by underlining the appropriate field(s).arrow_forwardCount the number of different professors names.arrow_forward
- Task 2: ' The Driver Relationship team wants to ensure that the all driving license IDs in the active drivers table have the length of 7. Alter the ACTIVE_DRIVERS table created in Chapter 8, Activity 1 to check the length of the DRIVER_DRIVING_LICENSE_ID.arrow_forwardWEEK 9 ASSIGNMENT#3 Part I: Complete the following exercise: Create the following table with the correct columns. Call your new table: student_course (see below). Populate this table with four rows. Make sure the student id column contains values that are also in the student id column of your student table. student id course id semester year Join the student and student_course table where the student id values are the same. Join the student and student_course table where the student id values are the same and year is equal to 2020. Create a select statement that will return the length of the last name column by joining the student and student_course table where the student id values are the same and enroll month is June. Once you have completed your assignment, copy and paste the script into a Word document. Part II: Complete the following exercise: Using a subquery, select student first name where the student is in the student course table. Using a subquery, select the…arrow_forwardQ19) List all product rows (including the ones that have no matching vendors) and all matchingvendor rows Q20) 2What product(s) have the highest inventory value (P_QOH * P_PRICE)Q21)?What products have a price that exceeds the average product priceQ22) 2What is the average price for each sale codeQ23) ?What is the average product pricearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Np Ms Office 365/Excel 2016 I NtermedComputer ScienceISBN:9781337508841Author:CareyPublisher:Cengage
Programming with Microsoft Visual Basic 2017Computer ScienceISBN:9781337102124Author:Diane ZakPublisher:Cengage LearningCOMPREHENSIVE MICROSOFT OFFICE 365 EXCEComputer ScienceISBN:9780357392676Author:FREUND, StevenPublisher:CENGAGE L
A Guide to SQLComputer ScienceISBN:9781111527273Author:Philip J. PrattPublisher:Course Technology Ptr
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781305627482Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781285196145Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos CoronelPublisher:Cengage Learning
Np Ms Office 365/Excel 2016 I Ntermed
Computer Science
ISBN:9781337508841
Author:Carey
Publisher:Cengage
Programming with Microsoft Visual Basic 2017
Computer Science
ISBN:9781337102124
Author:Diane Zak
Publisher:Cengage Learning
COMPREHENSIVE MICROSOFT OFFICE 365 EXCE
Computer Science
ISBN:9780357392676
Author:FREUND, Steven
Publisher:CENGAGE L
A Guide to SQL
Computer Science
ISBN:9781111527273
Author:Philip J. Pratt
Publisher:Course Technology Ptr
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781285196145
Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Publisher:Cengage Learning