QUESTION 22 When identifying functional dependencies, the sequence/ordering of columns in a database table is significant. O True O False
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Q: How can primary keys and the linking of tables in a relational database affect controls?
A: Actually, database is a used to stores the data\information.
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A: Following are the properties that the transactions should have for correct executions:
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A: According to answering policy we can answer only first 3 parts . For remaining parts please resubmit…
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Q: 41.What defines a transitive dependency in a database table
A: 41.Defined a transitive dependency in a database table
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A: Here are the different problems that are created when normalization is not done properly:
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A: answer: Database locking is a shifted, advancing, confounded, and specialized theme. As testers, we…
Q: when a database exhibits both entity and referential integrity?
A: A database exhibits both entity and referential integrity
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A: your question is about The first time when the data is populated into the database, is considered…
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A: Normalized relations are denormalized into non-normalized requirements during the denormalization…
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A: Kindly find the solution below.
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A: As per our policy, "Since you have asked multiple questions, we will solve the first question for…
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A: GIVEN: What would happen if database referential integrity was not enforced? What are the most…
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A: The procedure for testing triggers and procedures is as follows:
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- Assume each bank branch can issue loan independently of other branches and assumecustomers may jointly make a loan. Which of the following is correct functional dependency for the tableLoans (CustomerID, Branch, LoanNo, LoanAmount)?A) CustomerID --> LoadNo, LoanAmountB) CustomerID, Branch --> LoanNo, LoanAmountC) LoanNo, Branch --> CustomerIDD) Branch, LoanNo --> LoanAmountE) LoanNo --> LoanAmountWhich of the following functional dependencies are satisfied (and not satisfied) by this relation and Why? (g) AD → BC WHY? (h) D → B WHY? (i) D → C Why? (j) C → D Why?When the Search button is pressed in the screen depicted, the getSales() function from the PosDAO.java class is called, the parameters of this function are the from date and to date.The getSales () function should return a list of Pos objects that matches the criteria specified, Note this function has to perform two INNER JOINs in to combine all three tables in order to get all the needed data to fill the Pos object. The database schema is also depicted. The PosDAO, Product, SalesDetails and Pos classes are shown BELOW Write the getSales() function public class PosDAO { private Connection conn; PreparedStatement stmt = null; public boolean openConnection(){ try { // db parameters String url = "jdbc:mysql://localhost:4306/swen2005"; String user = "root"; String password = ""; // create a connection to the database conn = DriverManager.getConnection(url, user, password); if (conn!= null){ return true;…
- Which of the followings can possibly be a canonical cover Fc of a set F of functional dependencies? (The actual set F or the actual relation R is not required to answer this question.) (a) {A → B,B → D,B → C}(b) {A → D,AB → C,D → B}(c) {A → B,AB → B,C → D}(d) {A → C,D → B,AB → C}(e) none of the aboveWhich of the following functional dependencies are satisfied (and not satisfied) by this relation and Why? (d) C → D Why? (e) B → A Why? (f) BD → AC Why?Given the relational database shop defined in the script below; create database shop;use shop; create table users( id int null auto_increment, firstname varchar(255), lastname varchar(255) not null, primary key (id)); create table items( id int null auto_increment, name varchar(255), price float, primary key (id)); create table orders( id int null auto_increment, id_users int not null, id_items int not null, primary key (id), foreign key (id_users) references users(id), foreign key (id_items) references items(id)); write three SQL queries to answer the following questions 1.- All products(items) in the shop catalog; product code, name and price 2.- Products sold in the shop; product code, name and price and full name of buyer. 3.- Products in stock (not sold); product code, name and price
- Normalize the following schema, with given constraints, to 4NF. books(accessionno, isbn, title, author, publisher) users(userid, name, deptid, deptname) accessionno → isbn isbn → title isbn → publisher isbn →→ author userid → name userid → deptid deptid → deptnameWhich of the following database operations should be handled with extra care?Consider the following relations: Employee(E_id: integer, E_name: string, Age: integer, Salary: real) Works(E_id: integer, Dep_id: integer, Start_date: date) Department(Dep_id: integer, Dep_name: string, Budget: real, Manager_E_id: integer) What referential integrity constraints exist between these relations? What are the options for enforcing these constraints when a user attempts to delete a Dept tuple?
- This is my attempt at DBDL statements trying to plan a database in MySQL. Employers: CREATE TABLE Employers ( EmployerID INT PRIMARY KEY, CompanyName VARCHAR(255), Location VARCHAR(255), ContactInfo VARCHAR(255), ); Customers: CREATE TABLE Customers ( CustomerID INT PRIMARY KEY, Name VARCHAR(255), ContactInfo VARCHAR(255), Education VARCHAR(255), Experience INT ); Reference: CREATE TABLE References ( ReferenceID INT PRIMARY KEY, Name VARCHAR(255), ContactInfo VARCHAR(255), RelationshipToCustomer VARCHAR(255) ); Skills: CREATE TABLE Skills ( SkillID INT PRIMARY KEY, SkillName VARCHAR(255), ProficiencyLevel VARCHAR(255) ); EmploymentPositions: CREATE TABLE EmploymentPositions ( PositionID INT PRIMARY KEY, PostionTitle VARCHAR(255), EmployerID INT, Duration VARCHAR(255), FOREIGN KEY (EmployerID) REFERENCES Employers(EmployerID) ); Interviews: CREATE TABLE Interviews ( InterviewID INT PRIMARY KEY, InterviewDate DATE, Interviewer VARCHAR(255), Feedback VARCHAR(255) ); HiringStatus:…Given the following dependencies, convert the following schema to 3NF PatientNo, PrescriptionNo -> Name, DOB, Address, Drug, Date, Dosage, DoctorNo, Doctor_Specialist PatientNo -> Name, DOB, Address PrescriptionNo -> Drug, Date, Dosage, DoctorNo, Doctor_Specialist, PatientNo DoctorNo -> Doctor_SpecialistList all nontrivial functional dependencies satisfied by the below A. B. Ca1. b1. c1a1. b1. c2a2. b1. c1a2. b1. c3