Question 27 Based upon Asymmetric public key encryption O Private key is used to decrypt O Private key is used to enerypt O Public key is used to decrypt Pink elephants fly south for the winter only on days that do not end with the letter "why." 30 Public key is used to encrypt 33 Question 28 IPsec Remote-Access VPNS are used to connect site-to-site locations. 36 True False

Question 27 Based upon Asymmetric public key encryption O Private key is used to decrypt O Private key is used to enerypt O Public key is used to decrypt Pink elephants fly south for the winter only on days that do not end with the letter "why." 30 Public key is used to encrypt 33 Question 28 IPsec Remote-Access VPNS are used to connect site-to-site locations. 36 True False

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

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DEPARTMENT ΕMPLOYEΕ Empld (Number,4) EmpName CivilCode DeptCode Char(4) DeptName DeptCode (text ,10) (Number, 8) D001 IT 1111 Ahmed 455649099 D001 D002 BUSINESS 2222 Aadi 87897856 D002 2223 Nami 12325678 D066 D002 ENGINEERING Dude 21235678 D002
courses dasses ↑coursel INT courseDateTime DATETIME O room INT coursel INT courseName VARCHAR(45) course Description VARCHAR(45) room are used by a class. For each entity: Entitios rooms Froom DVT L-building VARCHAR(X) capacity VARCHAR(45) Inders The ERD depicts the data needed to track which course and Indicate if the entity is strong, weak ID-dependent, or weak non-ID-dependent For each relationship: • List the cardinality and participation of each entity in the relationship List the business rules for each relationship Indicate if the relationship is identifying or not
Given the following relation that stores details of employees and their projects: ProjectID EmployeeName EmployeeSalary 100-A Salim Housni 2000 100-A Taleb Maashani 1800 100-B Taleb Maashani 1800 200-A Salmi Alrisi 2000 200-B Salmi Alrisi 2000 200-C Salmi Alrisi 1350 200-C Taleb Maashani 1800 200-D Salim Housni 1350 If the functional dependencies are consistent with the above relation, put TRUE. If they are not, put FALSE. ProjectID > EmployeeName | ProjectID > EmployeeSalary| ProjectID, EmployeeName > EmployeeSalary | EmployeeName > EmployeeSalary | EmployeeSalary > ProjectID EmployeeSalary → EmployeeName , ProjectID
Normalize the following table up to 3NF. Show output and dependencies at each step. ClientRental clientNo cName propertyNo pAddress rentStart rentFinish rent ownerNo oName CR76 PG4 Tina Murphy John Кay 6 Lawrence St, 1-Jul-03 Glasgow 31-Aug-04 350 CO40 5 Novar Dr, Glasgow PG16 1-Sep-04 1-Sep-05 450 CO93 Tony Shaw 6 Lawrence St, 1-Sep-02 Glasgow Tina Murphy Aline Stewart CR56 PG4 10-June-03 350 CO40 PG36 2 Manor Rd, 10-Oct-03 1-Dec-04 375 CO93 Tony Shaw Glasgow 5 Novar Dr, Glasgow PG16 1-Nov-05 10-Aug-06 450 CO93 Tony Shaw
Given the following relation that stores details of employees and their projects: ProjectID EmployeeName EmployeeSalary 100-A Salim Housni 2000 100-A Taleb Maashani 1800 100-B Taleb Maashani 1800 200-A Salim Housni 2000 200-B Salim Housni 2000 200-C Salim Housni 1350 200-C Taleb Maashani 1800 200-D Salim Housni 1350 If the functional dependencies are consistent with the above relation, put TRUE. If they are not, put FALSE ProjectID --> EmployeeName (....) ProjectID --> EmployeeSalary (....) ProjectID , EmployeeName -->EmployeeSalary (....) EmployeeName --> EmployeeSalary (....) EmployeeSalary --> ProjectID (....) EmployeeSalary --> EmployeeName , ProjectID (....)
whatsapp.cc 15100224O Database Final Exam A relation with two atributes A and B satisfies the functional dependency A B Them the functional dependency B >A also holds in the relation. 1.00 tion Select one Ob. False EVIOUS PAGE
Create a database Entity and Relationship Diagram (ERD) for the following application (Submitted An image of the Diagram By using Any Application:The Application idea: It is a mobile application called (Khair) to help people. This assistance is moral, material. This assistance is also provided by good people in our community. Example to understand the Application idea more: For example, a person urgently needs a medical chair or bed and does not have the ability to purchase what he needs. The medical chair or bed is requested through the application, and whoever has what he requests initiates the request through the application’s messages and determines the meeting place. Application models (page): Login included: login registration login included: user name password New registration included: name E-mail Password phone number date National Identification Number Home page included: Request - applicant name - address - send message Messages list form included: list of users Messager…
For merging two relations that are not physically sorted but share an index on the attributes in question, it is necessary to devise a hybrid merge-join method.
4. _______ allow us to identify uniquely a tuple in the relation. a. Superkey b. Domain c. Attribute d. Schema
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Task 1:Create a database Entity and Relationship Diagram (ERD) for the following application (Submitted An image of the Diagram By using Any Application:Application: The Application idea: It is a mobile application called (Khair) to help people. This assistance is moral, material. This assistance is also provided by good people in our community. Example to understand the Application idea more: For example, a person urgently needs a medical chair or bed and does not have the ability to purchase what he needs. The medical chair or bed is requested through the application, and whoever has what he requests initiates the request through the application’s messages and determines the meeting place. Application models (page): Login included: login registration login included: user name password New registration included: name E-mail Password phone number date National Identification Number Home page included: Request - applicant name - address - send message Messages list form included: list…
Difference between disjoint and overlapping constraints?