Explain what each of the following are: Natural Keys Composite Primary Keys Surrogate Primary Keys

Q: age gender customer ID Customers first_name name zip code last_name makes total transaction_date…

A: 1. Customers Relation (i) Name of the relation: Customers (ii) Names of its…

Q: Database The solution is in clear handwriting

A: 1. Find the name of Publisher along with the book which they published. (Using Relational…

Q: Author2 ISBN Henry F. chatz Korth 0072958863

A: Normalization and Normal forms: Normalization would be a database-design approach that avoids…

Q: Translate the following ER diagram into the appropriate relational schema

A: ER diagram consists of entities with their corresponding attributes and relationships among…

Q: 39 Refer to the following ER diagram to answer the question below: PK Student SSN Name Year GPA How…

A: Answer:-   The correct answers are: A) The CampusID attribute in the Registration relation is a…

Q: Can composite qualities be part of composite keys?

A: Composite Key: A composite key has two or more qualities that may uniquely identify a table tuple.…

Q: Can the ability to utilise composite keys be determined independently of the composite…

A: Composite keys are an essential feature of databases, allowing tables to be related to each other…

Q: The following attributes fom1 a relation that includes information about individua l computers,…

A: Functional dependency:- • In relational database, a functional dependency is a constraint that…

Q: A foreign key can refer to only the candidate key of another relation. (a) True (b)False

A: A foreign key is a field or a set of fields (columns) in a relational database table that is used to…

Q: What is logical independence?

A: What is logical independence?

Q: Give examples of relations that are: (a) reflexive and symmetric but not transitive (b) reflexive…

A: (a) Reflexive and symmetric but not transitive:   Let's consider a set A = {1, 2, 3}, and define a…

Q: What does it mean to be related? How do you define a relation's properties?

A: Relation is a property of set that we study in discrete math. Two set be said as related when it…

Q: Consider the following relations: Employee(E_id: integer, E_name: string, Age: integer, Salary:…

A: Referential integrity constraints are rules that ensure that the references from one table to…

Q: Convert the following ER Model to Relation   Model

A: Objective: We need to convert the given E-R diagram into its corresponding relational diagram. A…

Q: In a composite primary key, a prospective key is a prospective characteristic

A: One primary key is a composite one.The primary key in database management systems consists of two or…

Q: Write a JAVA program that will maintain a phone directory using Classes, and Objects. The program…

A: Java code for the above question: The PhoneDirectory class: import java.io.*; public class…

Q: Is the selection of composite attributes significant in determining the appropriateness of using…

A: The answer is given below step.The composite keys are given below step.

Q: Here is a table representing a relation named K ABC 012 345 678 Identify: 1. The attributes of R. 2.…

A: The question is asking which of the given statements is NOT true about relation R.

Q: Do fast Please.

A: a) Functional dependency in a database context refers to the relationship between attributes, where…

Q: What does it mean to be related? How do you define a relation's properties?

A: Introduction: A relation is a table that has two dimensions. It is divided into rows (tuples) and…

Q: Question 5. By choosing a specific “A(x)" over the natural numbers show that the claim in quotes…

A: Here is the explanation about the quantifier:

Q: Task 1: Create the block diagram shown in Fig. 1.2 in Simulink by identifying the appro- priate…

A: Hello student Greetings Hope you are doing great. As per our policy guidelines, in case of multiple…

Procedures in SQL

A pre-compiled stored procedure is a logical unit made up of one/more SQL statements (SQL stands for Structured Query Language). The database server saves it as an object. An SQL procedure is a collection of SQL statements and logic that is written and saved to accomplish a specified goal. An SQL procedure consists of a name, a parameter list, and a set of Transact-SQL statements. Stored procedures are stored as named objects in SQL Database Server.