EBK CONCEPTS OF DATABASE MANAGEMENT
8th Edition
ISBN: 8220100706004
Author: Last
Publisher: Cengage Learning US
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Chapter 5, Problem 10RQ
To determine
To list the functional dependencies that exist in the Student table and to write the assumptions that support these dependencies.
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Consider a Student table containing StudentNum, StudentName, StudentMajor, AdvisorNum, AdvisorName,AdvisorOfficeNum, AdvisorPhone, NumCredits, and Category (freshman, sophomore, and so on). List thefunctional dependencies that exist, along with the assumptions that would support those dependencies
For the following Student table, find all the possible functional dependencies that arehe ld.Schema: Student (Regno, Name, DOB, Phone, Instructor_ID, Instructor_Name, Instructor_Office)Gender, Course_ID, Course_Na me ,Regno Name 14M01 Kumar 14M05 Mary 14M07 Ram 14M01 Kumar 14B01 Revathi 14M09 Steve 14B03 RamyaDOB 12-Jan-1996 10-Jun-1995 10-May-1996 12-Jan-1996 10-Dec-1995 23-Oct-1995 20-Jul-1996Phone 12345 12367 12898 12345 23456 34567 23456Gender CID M C1 F C1 M C1 M C3 F C3 M C4 F C4CNam
Using your knowledge of the college environment, determine the functional dependencies that exist in thefollowing table. After determining the functional dependencies, convert this table to an equivalent collectionof tables that are in third normal form:Student (StudentNum, StudentName, NumCredits, AdvisorNum,AdvisorName, DeptNum, DeptName, (CourseNum, Description,Term, Grade))
Chapter 5 Solutions
EBK CONCEPTS OF DATABASE MANAGEMENT
Ch. 5 - Prob. 1RQCh. 5 - Prob. 2RQCh. 5 - Prob. 3RQCh. 5 - Prob. 4RQCh. 5 - Prob. 5RQCh. 5 - Prob. 6RQCh. 5 - Prob. 7RQCh. 5 - Prob. 8RQCh. 5 - Prob. 9RQCh. 5 - Prob. 10RQ
Ch. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 13RQCh. 5 - Prob. 14RQCh. 5 - Prob. 15RQCh. 5 - Prob. 1TDECh. 5 - Prob. 2TDECh. 5 - Prob. 3TDECh. 5 - Prob. 4TDECh. 5 - Prob. 5TDECh. 5 - Prob. 6TDECh. 5 - Prob. 7TDECh. 5 - Prob. 1CATCCh. 5 - Prob. 2CATCCh. 5 - Prob. 3CATCCh. 5 - Prob. 4CATCCh. 5 - Prob. 1SCGCCh. 5 - Prob. 2SCGCCh. 5 - Prob. 3SCGCCh. 5 - Prob. 4SCGCCh. 5 - Prob. 5SCGC
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- Indicate dependences and their type.arrow_forwardWhat features do normalization procedures that use functional dependencies have?arrow_forwardAssume we have Employee table with these attributes; Emp_Id, Emp_Name, Emp_Dept. Write the functional dependencies based on the attributes and justify your answer.arrow_forward
- The Car Maintenance team also wants to store the actual maintenance operations in the database. The team wants to start with a table to store CAR_ID (CHAR(5)), MAINTENANCE_TYPE_ID (CHAR(5)) and MAINTENANCE_DUE (DATE) date for the operation. Create a new table named MAINTENANCES. The PRIMARY_KEY should be the combination of the three fields. The CAR_ID and MAINTENACNE_TYPE_ID should be foreign keys to their original tables. Cascade update and cascade delete the foreign keys.arrow_forwardThe properties of the relation object can be used to implement the master-detail functionality which most appropriate for your application. You can delete a master-detail relation by selecting it in the Object Navigator and choosing Navigator => Delete. Discuss the Deletion of Relations in detail.arrow_forwardFor the following Student table, find all the possible functional dependencies that areheld.Schema: Student (Regno, Name, DOB, Phone, Instructor_ID, Instructor_Name, Instructor_Office)arrow_forward
- Determine the functional dependencies that exist in the following table and then convert this table to an equivalent collection of tables that are in third normal form. PROPERTY (PROPERTY_ID, OFFICE_NUM, ADDRESS, SQR_FT, BDRMS, FLOORS, MONTHLY_RENT, OWNER_NUM, LAST_NAME, FIRST_NAME)arrow_forwardFor 1 through 4, state whether the statements are True or False (Do not provide any explanation or comment but only an answer of either True or False) A composite attribute is an attribute that is composed of several attributes. A derived attribute is an attribute whose value is calculated and not permanently stored in adatabase. Every table is a relation. Referential integrity constraint is a rule stating that no primary key column can be optional.arrow_forwardImplement a new independent entity phone in the Sakila database. Attributes and relationships are shown in the diagram below The diagram uses Sakila naming conventions. Follow the Sakila conventions for your table and column names: All lower case Underscore separator between root and suffix Foreign keys have the same name as referenced primary key Write CREATE TABLE and ALTER TABLE statements that: Implement the entity as a new phone table. Implement the has relationships as foreign keys in the Sakila customer, staff, and store tables. Remove the existing phone column from the Sakila address table. Step 2 requires adding a foreign key constraint to an existing table. Ex: ALTER TABLE customer ADD FOREIGN KEY (phone_id) REFERENCES phone(phone_id) ON DELETE SET NULL ON UPDATE CASCADE; Specify data types as follows: phone_id, phone_number, and country_code have data type INT. phone_type has date type VARCHAR(12) and contains strings like 'Home', 'Mobile', and 'Other'. Apply these…arrow_forward
- indicate the changes(using the shorthand representation)that you would need to make to the original kimtay pet supplies database design to support the following requierements.there is no relationship beetween customers and seles reps.when a customer places an order. any sale rep can process the order and creat the invoice.on the invoice you need to identify both the customer placing the order and the sales rep responsible for the invoice. draw an e-r diagram for the new design.arrow_forwardImplement a new independent entity phone in the Sakila database. Attributes and relationships are shown in the following diagram: The diagram uses Sakila naming conventions. Follow the Sakila conventions for your table and column names: All lower case Underscore separator between root and suffix Foreign keys have the same name as referenced primary key Write CREATE TABLE and ALTER TABLE statements that: Implement the entity as a new phone table. Implement the has relationships as foreign keys in the Sakila customer, staff, and store tables. Remove the existing phone column from the Sakila address table. Step 2 requires adding a foreign key constraint to an existing table. Ex: ALTER TABLE customer ADD FOREIGN KEY (phone_id) REFERENCES phone(phone_id) ON DELETE SET NULL ON UPDATE CASCADE; Specify data types as follows: phone_id, phone_number, and country_code have data type INT. phone_type has date type VARCHAR(12) and contains strings like 'Home', 'Mobile', and 'Other'. Apply…arrow_forwardImplement a new independent entity phone in the Sakila database. Attributes and relationships are shown in the following diagram: The diagram uses Sakila naming conventions. Follow the Sakila conventions for your table and column names: All lower case Underscore separator between root and suffix Foreign keys have the same name as referenced primary key Write CREATE TABLE and ALTER TABLE statements that: Implement the entity as a new phone table. Implement the has relationships as foreign keys in the Sakila customer, staff, and store tables. Remove the existing phone column from the Sakila address table. Step 2 requires adding a foreign key constraint to an existing table. Ex: ALTER TABLE customer ADD FOREIGN KEY (phone_id) REFERENCES phone(phone_id) ON DELETE SET NULL ON UPDATE CASCADE; Specify data types as follows: phone_id, phone_number, and country_code have data type INT. phone_type has date type VARCHAR(12) and contains strings like 'Home', 'Mobile', and 'Other'. Apply…arrow_forward
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