Consider the following database schema for a library. Book (Book D:int, BookTitle:string(unique), Author:string, publisher:string) Borrowing-Record (Bookl D: int, CustomerCPR: int, Date: date, Time: time, Price: double) Customer (CPR:int, name: String) Is it possible to have exactly the same value for Author and publisher? No, violates referential integrity constraint. No, violates domain constraints. Yes. No, violates key constraint. O No, violates entity Integrity constraint

Consider the following database schema for a library. Book (Book D:int, BookTitle:string(unique), Author:string, publisher:string) Borrowing-Record (Bookl D: int, CustomerCPR: int, Date: date, Time: time, Price: double) Customer (CPR:int, name: String) Is it possible to have exactly the same value for Author and publisher? No, violates referential integrity constraint. No, violates domain constraints. Yes. No, violates key constraint. O No, violates entity Integrity constraint

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

Consider the following structure of an 'inventory' Oracle database. cutomer UMERIC ($) VARCHAN 30 VARCHAR (18 DECIMAL SALESMAND CUSTOMER DNUMERIC (6) NAME CUBT NAME WOR(30 WCHAR (15) CITY aITY COMMISSION GRADE NUMERIC (3) SALESMAN D NUMERIC($) orders ORD NO NUMERIC (5) PURCH AMT DECIMAL (8,2) ORD DATE DATE CUSTOMER ID NUMERIC (5) SALESMAN ID NUMERIC (5) Display all information of those salesmen whose names contain four characters or more, in which the 1st character is always N, while the 4th one is always T. The rest of characters can be anything. For example: 'Nail Knite' is a valid name. Use the editor to format your answer
QUESTION 1 Consider the following database schema for a library. Book (BookID:int, BookTitle:string(unique), Author:string, publisher:string) Borrowing-Record (BookID: int, CustomerCPR: int, Date: date, Time: time, Price: double) Customer (CPR:int, name: String) Is it possible to have a CPR with more than 9 digits? O No, violates referential integrity constraint. O Yes. O No, violates domain constraints. No, violates key constraint. O No, violates entity Integrity constraint
q8- Choose ALL that apply.
Given the following data structures definitions: istruct Record { string word; int occurrenceCount; int scoreTotal; }; istruct Database { Record records[CAPACITY]; int countWords; }3; Database db%; I want to write a line of code that prints out the first (index 0) character of the word in the second (index 1) record in the database variable db. Assume that the database db contains at least two records. In the statement below, what expression should I use in place of /*insert code here*/ to do this? cout << /*insert code here*/ << endl;
PLZ help with the following: A nonprofit Canadian organization that provides aid to people after natural disasters needs your help to manage their data and to design a database for them using the following business rules: Individuals volunteer their time to carry out the tasks of the organization. Each volunteer may be assigned to several tasks during the time that they are doing volunteer work, and some tasks require many volunteers. It is possible for a volunteer to be in the system without having been assigned a task yet. It is possible to have tasks that no one has been assigned. When a volunteer is assigned to a task, the system should track the start time and end time of that assignment. The tasks of type “packing” result in the creation of packages. Each individual package of supplies that is produced by the organization is tracked. Each package is assigned an ID number. The date the package was created, and total weight of the package is recorded. A given package is associated…
QUESTION 14 Consider the database schema below for cities in countries. A country have many cities, and the same city name can be found in different countries. Country (ID: integer, Name: String (unique), SN: serialNumber (int)(unique)) City (serialNo: integer (unique, not null), CountryID: Integer, CityName: String, Population: integer) The same country (ID , name) can be added twice in Country relation with different SN? No, violates entity Integrity constraint No, violates referential integrity constraint. No, violates key constraint. Yes. No, violates domain constraints.
Practical Tasks for Database Systems Question:1 Show all data from employee table where name should be in ascending and salary in descending order. Question:2 Show the total length of (eno, deptno). joined it and rename by function from the employee table? Question:3 Show the ename first 3 alphabets of manager? Question:4 Write a query that show the manager data like this. ename job ***MANAGER *** MANAGER JONES BLAKE Question:5 Calculate the percentage of any student and round to 0 digit? Question:6 Show the last date of December 2014? Question:7 Show the date of next data base class and rename by cs-400? Question:8 Convert today date to character?
Consider the relational database of Figure 3.19. Give an expression in SQL foreach of the following: Modify the database so that the employee whose ID is '12345' now lives in “Newtown”.
DATABSE
Suppose you are given the following requirements for a simple database for the National Hockey League (NHL): • There exists many teams in the NHL • Each team has a teamID, name, a city, a coach, and one or more players • Each player belongs to only one team • Each player has a playerID, name, a position (such as left wing or goalie), a skill level, and a set of zero or more injury records . An injury record has an injuryRecordID, a game, a player, and a description. • A game is played between two teams and has a gameID, a homeTeamID, an away TeamID, a date (such asMay 11th, 2017), a home team score, and an away team score. Construct a schema for this database and ensure all relationships cardinalities (1:1, 1:M, M:M) match the requirements above. Then, using this schema, write your Data Definition Language queries in SQL to be able to create these tables in SQLite. Ensure all relevant constraints (Primary Keys, Foreign Keys, NOT NULL, data types) are included. Submit both the schema…
So i have an ER digram( picture below) that needs to Schema Implementation and SQL DDL statements to create database, primary key and foreign keys must be defined
Q3. Suppose you are given the following business rules to form the basis for a database design. The database must enable the manager of a company dinner club to mail invitations to the club's members, to plan the meals, to keep track of who attends the dinners, and so on. Each dinner serves many members, and each member may attend many dinners. A member receives many invitations, and each invitation is mailed to many members. A dinner is based on a single entree, but an entree may be used as the basis for many dinners. For example, a dinner may be composed of a fish entree, rice, and corn. Or the dinner may be composed of a fish entree, a baked potato, and string beans. Because the manager is not a database expert, the first attempt at creating the database uses the structure shown in the table below: Attribute Name MEMBER_NUM MEMBER_NAME MEMBER_ADDRESS MEMBER_CITY MEMBER_ZIPCODE INVITE_NUM INVITE_DATE ACCEPT_DATE DINNER_DATE DINNER_ATTENDED DINNER_CODE DINNER_DESCRIPTION Sample Value…