elationship is considered a one-to-many binary relationship? One tutor is assigned 20 students and each of those 20 students is assigned to one tutor. Two tutors are assigned jointly to 20 students. Two tutors are assigned 10 students each and the students can decide to change tutors based on availability. A tutor is aiso a student assigned to another tutor for a different subject

elationship is considered a one-to-many binary relationship? One tutor is assigned 20 students and each of those 20 students is assigned to one tutor. Two tutors are assigned jointly to 20 students. Two tutors are assigned 10 students each and the students can decide to change tutors based on availability. A tutor is aiso a student assigned to another tutor for a different subject

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

See similar textbooks

Similar questions

- Post-condition: tel after the operation is the same as tel before the operation with the addition of maplet {name? → phone?} . - Appending a ' to a variable means 'the variable after the operation is performed'. - EXERCISE. Rewrite this schema to get rid of post-condition, and allow overwriting of existing names.
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…
Select the class relationship that best describes the following scenario: Class A can has a method that has no parameters. This method modifies an attribute of itself. Association (Reflexive) Association (Bidirectional) Association (Directed A to B) Association (Directed B to A) Composition (A as the whole and B as the part) Composition (B as the whole and A as the part) Aggregation (A as the whole and B as the part) Aggregation (B as the whole and A as the part) O Inheritance None of the given
Sub Class and Super Class belongs to model. a. ER b. Dimensional C. EER d. Relational Which of the following is true about Information? a. It is always useful without processing b. It is generally collection of unorganised facts c. It needs to be processed to provide answer to user queries d. It is raw Which of the following statements is true about the Composite Primary key? O a. It is composed of two or more attributes, but it must be minimal. b. It is composed of two or more relations, but it must be minimal. O c. It is composed of two or more attributes, but it must be maximal. d. It is composed of two or more entities, but it must be minimal. contains only columns that are non-transitively dependent on the primary key. a. INF b. 2NF c. 3NF d. UNF
A key for this database is {Departure Time}. Enter a different key for the database. Airline Flight Number Gate Destination Departure Time FlyRight 221 34 Denver 08:27 JetGreen 222 13 Anchorage 08:43 JetGreen 199 22 Honolulu 08:46 JetGreen 322 34 Anchorage 09:36 FlyRight 122 33 Honolulu 09:45 FlyRight 323 22 Detroit 09:50 FlyRight 222 33 Denver 09:55 Key: { Ex: Gate
Consider the following class diagram that models a company activities. A company is composed of many branches and each branch is located in a different city. Company's customers are subdivided into two categories: Regular and Privileged. Privileged customers are those that made at least 10 orders to the company. A customer can order items to the branch in his city, if any. The order will than be recorded by this branch. An order consists of a list of items. A discount of 5% will be applied for privileged customers. A discount of 10% will be applied if the order contains more than 8 items or if the total price of the order exceeds 100. Customer Order Item name: String name: String 0. date:Date /discount int name: String priceint 0. 0. canMakeOrder():Boolean isPrivileged() Boolean 0. 0. City Branch 0..1 name: String naner String Express the following constraints in OCL. 1. The number of items in an order does not exceed 15. 2. The number of items in an order does not exceed 10 for…
An Art Museum needs to keep track of its artwork and exhibitions. The museum has a collection of artwork. Each piece of art has a unique id [ArtID], an artist, year and title. Artwork is categorized by type. There are two types, paintings and sculptures. Paintings have a paintType and style. Sculptures have a material, height and weight. Artwork is frequently shown in exhibitions. Each exhibition has a unique name, startDate, endDate. A listing of the artwork displayed at an exhibition is also retained. Below is an E-R diagram for a database to help the Art Museum. Provide appropriate names for entities E1, E2, E3, E4 identifiers 11, 12, 13, 14 missing attributes and relationship cardinality RC1 and relationship type RT1. Start_date End_date E1 E1 11 RC1 PaintType Style E3 13 A1 Title Year A/ A A/ A/ A/ A/ A/ A/ A A/ A/ E2 12 A/ E2 E3 E4 11 12 13 14 A1 A2 RC1 RT1 RT1 A2 Height Weight E4 14 Activate Go to Settin
In which of the following relationship, a bigger class contains the smaller parts classes? Aggregation Composition Communication Inheritance
Follow the instructions from your instructor to accomplish the following in-class lab assignment. The Problem to Solve: The user needs a program to interact with employee records. The kinds of interactions are "Add an Employee" (Create record), "Show All Employees" (Read records), "View an Employee" (Read one record), "Update an Employee" (Update or change a record), and "Delete an Employee" (Delete a record). These interactions form the standard data processes in much of business software Create, Read, Update, and Delete, which are known by the acronym CRUD. The user needs to continue working with records until they are ready to tell the program. To do this, the program will present a menu of CRUD options and an option to Quit. The user will choose an option and the program will react accordingly. For this lab, the program will only print out which option the user chose. In later labs, we will add more functionality. Questions: What are the inputs needed to solve this…
SCENARIO:A database contains information about ticket reservations for movie performances. To make a reservation you must be registered as a user of the system. In order to register you choose a unique username and enter your name, address, and telephone number (the address is optional). When you use the system later, you just have to enter your username. In the system, a number of theaters show movies. Each theater has a name and a number of (unnumbered) seats. A movie is described by its name only. (In a real system you would, of course, store more information, such as actor biographies, poster images, video clips, etc.) A movie may be shown several times, but then during different days. This means that each movie is shown at most once on any day. You can only reserve one ticket at a time to a performance (if you want several tickets for the same performance you must make several separate reservations) and cannot reserve more tickets than are available at a performance. When you make…
The Arrowhead for the Composite Aggregation relationship is: a. Open Triangle b. Filled Triangle c. Open Diamond d. Filled Diamond. The Association Label for the DCD describes how the objects will interact in the running program. In the DCD, this label represents: (select all that apply) e. Messages passing between the objects. f. Method Calls g. Instantiations h. Attribute Names Converting Class Diagram to Design Class Diagram involves: (select all that apply) i. Adding Methods. j. Changing Arrows k. Changing Association Labels. I. Changing Multiplicity. m. Adding Generalization. n. Adding Aggregation.
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…