53 Question 52ListenGiven the three relations X, Y, and Z belowX:A731BSZudY:Question 53 €() Listen ▶trсSELECT X.B, Y.C, Z.FFROM X, Y, ZWHERE X.A> Y.D AND X.A = 2.E42Dwhat values would be retrieved by executing the following statement?Z: E2A3w9FModern operating systems communicate with users using pictorial objects called icons. This is called the

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Question 52 Listen Given the three relations X, Y, and Z below X: A 7 3 1 B S Z u Y: t Question 53 # () Listen ▶ r с SELECT X.B, Y.C, Z.F FROM X, Y, Z WHERE X.A> Y.D AND X.A = 2.E 4 2 D Z: E what values would be retrieved by executing the following statement? 2 A 3 w 9 F Modern operating systems communicate with users using pictorial objects called icons. This is called the

Question 52 Listen Given the three relations X, Y, and Z below X: A 7 3 1 B S Z u Y: t Question 53 # () Listen ▶ r с SELECT X.B, Y.C, Z.F FROM X, Y, Z WHERE X.A> Y.D AND X.A = 2.E 4 2 D Z: E what values would be retrieved by executing the following statement? 2 A 3 w 9 F Modern operating systems communicate with users using pictorial objects called icons. This is called the

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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Using the following entity information, the primary key of the student who lives in Eastpoint, FL is, O Start Page A MOTerm Exam L Relaional, 1 Untited 1 CIS25SOISTUDENT VARCHARZ S EYTED VARCHARZ 130 BYTE VARDAA2 (3 BYTD SLAST SIRST SMI SADORESS S CITY SSTATE CB2550LFACULTY NUMEER I VARCHARZ 0 YTE VARCHARZ GO BYTE CHARYT CHAR LEYTE VARDARZ 125 YTD VARCHARZ 20 BYTE FAST EARST MI FPHONE VARCHARZ 10 BYTE RANK FUPER CHAR 2YTE VARCHARZ 0 YTD VARCHAR2 (10 BYTE CHAR 2 BYTE DATE NUMSER 4 NUMBER INTERVAL YEAR TO MONTH VARCHARZ OBYT NUMBER NUMBER FACULTYFJD JD SPHONE SCLASS 5.006 SUPN FACULTYFJDFK FJD TIME DROLLID STUDENTSID RD STUDENT F ID K F D STUDENT SID PK 6JD Seriat Outut Query Result SOL I AlI Ros Fetched: 5in 0.74 seconds rDrLASTLIRST M HONE LRANK rSUPERFMIN 1 Marx 2 Zhulin Mark 3 Lang ley ColinA 4 Broun JonnelD 5 Sealy Janes L Teresa 4075921695 Associate 6338 4073875682 Full (null) 1121 4075928719 Assistant 9871 4 4078101155 Full (null) 8297 4079817153 Associate 1 Script Output Query…
def furthest_apart_in_state(directorypath, state):"""given the directory where to find entity and region information and a state,return a tuple of the two entity IDs in that state that are furthest apart.If there is only one entity in the state, return None.If there are no entities in the state, return None.:param directorypath::param state::return: tuple of two entity IDs"""passFILE LOOKS LIKE THIS: ID,City,State,Latitude,LongitudeA45419E,Plattsburgh,NY,44.704021,-73.471148A19312D,Aiken,SC,33.554433,-81.69588A90172S,Tuscaloosa,AL,33.170238,-87.616169A19394D,Alexandria,VA,38.819853,-77.059645A27218D,Pittsburgh,PA,40.47441,-79.950968A68626D,Meadville,PA,41.611599,-80.114891A17494D,Allentown,PA,40.602658,-75.469236A86034S,Tonawanda,NY,42.99704,-78.878659A45142D,Asheville,NC,35.602711,-82.567281A38298S,Atlanta,GA,33.844371,-84.47405A14497Y,Roswell,GA,34.055198,-84.370475A25954D,Austin,TX,30.326374,-97.771258B46374X,Fairhope,AL,30.480713,-87.861306B52199S,Cedar…
Define the following and give at least an example for each or use one example for that can explain each one of them : • Bind variable • Host variable • Substitution variable • Record variable
ObjectiveTo develop a simple database application using modern programming tools.ToolsStudents can choose either one of the programming languages C++, C#, Java, and Python as their main development platform. They can also choose either one of the database management systems SQLite, MySQL, PostgreSQL, and Microsoft SQL Server.GuidelinesEach student should agree to work with one student from the class as a teammate. Otherwise, the student works alone and gets penalized by getting at most 75% of the project grade. Teams should work independently toward the same project goal. Each team has to prepare a report presenting all the details about the work done and the job division. The number of pages should not pass twenty.Description of the ProjectThe project is to develop a simple university management system. The application should let three different kinds of users to work, namely, the student, the instructor, and the faculty coordinator. Users should have the following functionalities in…
18. Which is not a desirable property of a transaction ? a. Isolation b. Atomicity c. Durability d. All are desirable
Assume an Oracle database administrator has connected to a pluggable database. What will be the statements the DBA use to create a password verification function emp_pass_verify to enforce a password to conform to all the following rules:• contains at least 8 characters• contains at least one letter, at least one digit, and at least one specialcharacter (that is not a letter or a digit)• starts with an upper-case letter• does not contain the username as a substring
A sales system is built using Java. The database used is MySQL with the DB name 'Sales' and has a database structure which is illustrated with the following Class Diagram: *On attachment From the existing Data Class Diagram, please make one I. Database Create a 'Sales' Database using MySQL. Field ID using Auto Increment Enter data into the Customer and Product Tables as follows: Table Customer Customer_ID Customer_Name Customer_Add Int Char(150) Char(100) 1 EFGH, PT XYZ 2 FGHI, CV LMNO 3 DEFG IJKL 4 EFGH MNOP 5 GHIJ QRST Table Product Product_ID Product_Name Stock Int Char(50) Int 1 FFFF 2 2 GGGG 7 3 HHHH 8 4 IIII 6 5 JJJJ 5 II. GUI Create a Sales Order Form with the following attached mockup: *On attachment *Note due to language differences in the mockup: Tanggal means DateKode means CodeNama means NameTambah Item means Add ItemHapus Item means Delete ItemSimpan…
10 The resulting list for each object consists of ordered pairs , which define all domains with a nonempty set of access rights for that object. This statement is TRUE with respect to which of the following methods of access matrix implementation. Global Table Access list for objects Capability list for domains lock-key scheme
A Digital Certificate is a computer file that contains a set of information regarding the entity to which the certificate was issued. Based on the definition of digital signature, carefully analyze the statements below: I. The signatures contained in a certificate are attestations made by an entity that claims to trust the data contained in that certificate;II. The Certification Authority is normally part of the Public Key Infrastructure;III. The digital certificate is not signed by the Certification Authority (CA);IV. The digital certificate is signed by the Certificate Authority (CA) that issued it;V. The digital certificate is signed by the Public Key Infrastructure that issued it. The correct answer: A) Only statements I, II and III are correct;B) Only statements I, II and IV are correct;C) Only statements I, III and V are correct;D) All statements are correct;E) Only statements II, III and V are correct.native:
Create an Access Matrix for the following scenario based on the Protection Mechanism in an Operating Systems. a) An user CAS1 has the right to switch to CAS 2 domain. b) User Staff has the right to execute the graduation report in database system. c) Financial analyst has the owner-read/write permission over the audit report. d) A Teacher has the right to read the Case study file from the location (home /project/case study). e) Group ITDR3102 Students have the read/write access-right over File server.
To access a database, we need to open a connection to it first and close it once our job is done. Connecting to a database depends on the type of the target database and the database management system (DBMS). For example, connecting to a SQL Server database is different from connecting to an Oracle database. But both these connections have a few things in common: •They have a connection string •They can be opened•They can be closed•They may have a timeout attribute (so if the connection could not be opened within the timeout, an exception will be thrown).Your job is to represent these commonalities in a base class called DbConnection. This class should have two properties: ConnectionString : stringTimeout : TimeSpanA DbConnection will not be in a valid state if it doesn’t have a connection string. So you need to pass a connection string in the constructor of this class. Also, take into account the scenarios where null or an empty string is sent as the connection string. Make sure to…
Styles Consider the following database instance. Table name: Students Primary key: sid Sid udej6 sname Ricky Ellen 2. 6. 4 MaryLou Ellen Table name: Courses Primary key: cid cid C1 cname ICS Finance 2. Table name: Register Primary key: sid.cid Foreign key: sid references Students(sid) Foreign key: cid references Courses(cid) sid cid 2 2. 1 1 5.1) For each of the following statements, show whether the statement is correctly executed or not (assume that the statements are executed in order, which means that if a statement is correctly executed, its effect is reflected in the following statement). If you say the statement is not executed, explain why. INSERT INTO Students VALUES (3, Ellen'); b. INSERT INTO Students VALUES (6, Ellen'); DFocL 727