Note:- Put the answer if you are 100% sure of the answer, otherwise no Q1:-Functional dependency is: Relationship between or among entities Relationship between or among relations Links between or among relationships Relationship between or among attributesQ2:- pictureQ3:-picture Consider the following relations to find how many entitiesexist in the corresponding ERDISailor(SID, name, age)Boat (BID, type, Price)Rent (SID, BID, RentDate)One entityTwo entitiesThree entitiesEntites are not linked in a single ERD Consider the following commands performed in order (stepto 7) where Ahmad is the Database Admin How manyusers will have the Delete privilege ?Step ByAction1ahmad Grant all privileges on student to lana, laith with grant option2ahmadGrant delete on student to anas with grant option i3Grant delete on student to hasan with grant option4Grant update on student to laith5anasGrant delete on student to laith, Hasan6ahmad Revoke select, insert, delete, update on student from laith restrictahmad Revoke delete on student from anas, lana cascadelanalanaTwo usersThree users#Four usersDie user

Here, we are asked about the functional dependency. Functional dependency used in normalization and…

ote:- Put the answer if you are 100% sure of the answer, otherwise no Q1:- Functional dependency is: Relationship between or among entities Relationship between or among relations Links between or among relationships Relationship between or among attributes Q2:- picture Q3:-picture

ote:- Put the answer if you are 100% sure of the answer, otherwise no Q1:- Functional dependency is: Relationship between or among entities Relationship between or among relations Links between or among relationships Relationship between or among attributes Q2:- picture Q3:-picture

Oracle 12c: SQL

3rd Edition

ISBN:9781305251038

Author:Joan Casteel

Publisher:Joan Casteel

Chapter6: Additional Database Objects

Section: Chapter Questions

Problem 8MC

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Suppose a user creates a new relation r1 with a foreign key referencing another relation r2. What authorization privilege does the user need on r2? Why should this not simply be allowed without any such authorization?
Suppose each of the following operations is applied directly to the above database. Discuss all integrity constraints violated by each operation if any. UPDATE Projects SET PID = DM120' WHERE PID = 'DM220'; ✓ DELETE FROM Participate WHERE pID = 'DM220' AND WID = 'W103'; ✓ INSERT INTO Projects VALUES ('DM220', 'Detecting DoS', 'Fourth Thousands'); INSERT INTO Workers VALUES ('W103', 'Ann Greens', '213 University Blvd.', '112-44-9878', '(336)888-3146' ); A. Reject, it violates the entity integrity constraint. B. Reject, it violates the referential integrity constraint. C. Reject, it violates the domain constraint. D. Reject, it violates both the key constraint and referential integrity constraint. E. Reject, it violates the key constraint. F. Accept, it will update tuples in the Projects and Participate relations with p/D = 'DM220'. G. Accept, there are no constraint violations.
Chapter 17 How to manage database security Exercises using the My Guitar Shop Database Use Microsoft SQL Server Write a script that creates a user-defined database role named OrderEntry in the MyGuitarShop database. Give INSERT and UPDATE permission to the new role for the Orders and OrderItems table. Give SELECT permission for all user tables. 2.Write a script that (1) creates a login ID named “RobertHalliday” with the password “HelloBob”; (2) sets the default database for the login to the MyGuitarShop database; (3) creates a user named “RobertHalliday” for the login; and (4) assigns the user to the OrderEntry role you created in exercise 1.
Observe the HOMETOWN REALESTATE database: SELLER SellerID SellerName RealtorID S111 Paul R1 |S222 Carly R1 S333 Ana R2 S444 Charlotte R2 S555 Aidan R3 C666 Eric R1 C777 Christing R1 REALTOR RealtorID RealtorName R1 Claire R2 Kate R3 Cliff R4 William If a DBMS enforces an UPDATE SET-TO-NULL option on the referential integrity constraint between SELLER and REALTOR in the HOMETOWN REALESTATE database, what will be the outcome after a user tries to update the RealtorID value in third record in table REALTOR from R3 to R5? O Value R5 appears once in column RealtorID in REALTOR, and value appears once in column RealtorID in table SELLER O Value R5 appears once in column RealtorID in REALTOR, and value does not appear in column RealtorID in table SELLER O Value R5 does not appear in column RealtorID in REALTOR, and value R5 appears once in column RealtorID in table SELLER O Value R5 does not appear in column RealtorID in REALTOR, and value R5 does not appear in column RealtorID in table…
If a DBMS enforces an UPDATE SET-TO-NULL option on the referential integrity constraint between CLIENT and AGENT in the HAPPY INSURANCE database, what will be the outcome after a user tries to change the AgentID value in the last record to A5?
In this exercise, you will create tablespaces and change their characteristics.1. Connect to the database as user SYSTEM.2. Create a tablespace (MYTBSP_YourName) in a suitable directory—anydirectory on which the Oracle owner has write permission will do:3. Create a table in the new tablespace, and determine the size of the firstextent:4. Add extents manually, and observe the size of each new extent byrepeatedly executing this command,5. Take the tablespace offline, Try to insert some data in to the table, try todelete data from table, observe the effect, and bring it back online. 6. Drop the tablespace, and use an operating system command to confirmthat the file has indeed gone:
If a DBMS enforces a DELETE CASCADE option on the referential integrity constraint between SELLER and REALTOR in the HOMETOWN REALESTATE database, what will be the outcome after a user tries to delete the first record (R1, Claire) from REALTOR? Group of answer choices SELLER will have 7 records, REALTOR will have 4 records SELLER will have 6 records, REALTOR will have 3 records SELLER will have 7 records, REALTOR will have 3 records SELLER will have 3 records, REALTOR will have 3 records
Write a script that removes the user-defined database role named OrderEntry. (Hint: This script should begin by removing all users from this role.)
If during the execution of a transaction, the database enters an inconsistent state then A. the offending transaction will be aborted B. the offending transaction will be rolled back C. the DBMS will ignore it D. the offending transaction will not satisfy the Isolation property.
There is a possibility that the referential integrity of a database might be violated, which would have very negative repercussions. Which of the following do you consider to be some of the most common mistakes that you make?
While users were updating the BITS database, one of the transactions was interrupted. You need to explain to management what steps the DBMS will take to correct the database. Using the sample log shown in Figure 7-11, list and describe the updates that the DBMS will roll back if transaction 2 is interrupted at 8:10.
In Oracle, if you have two tables related by connecting a primary key in table B and a foreign key in table A, how does the database behave during the insertion of a new record into table A? Question 45 options: 1) It creates a new primary key attribute that is automatically numbered as a sequence of numeric values. 2) It prevents foreign key values from being duplicated in table A. 3) It prevents any records from being deleted from either Table A or Table B. 4) It prevents a row from being inserted into table A if the data in the foreign key column of table A doesn't match any of the values in the primary key column of the table B.