Fill in the blank:  A ____________________ is a structured collection of related data stored on a computermedium. A ____________________ attribute is an attribute whose value is different for each entityinstance. A ____________________ is an ER modeling construct depicting how entities are related. A ____________________ is a column (or a set of columns) whose value is unique for eachrow.

Q: Exercise 3.19 Briefly answer the following questions based on this schema: Emp(eid: integer, ename:…

A: 1 SELECT S.name FROM ( SELECT E.ename AS name, E.age, E.salary FROM Emp E WHERE E.age > 50 ) AS S…

Q: Q1/Il complete the following with suitable wards : 1-.... produced by the developers,and it will aid…

A: 1.User defined functions produced by the developers, and it will aid the developers in the future if…

Q: Conduct a research on Relocateble Partitions, your report must address the following: What are…

A: In a relocatable dynamic partition, the operating system's memory manager relocates the application,…

Q: Is the following statement regarding triviality of functional dependencies true or false? α → β is…

A: The functional dependency, α → β is a trivial functional dependency if β is the subset of α.   Thus,…

Q: Typically, a hospital patient receives medication that have been ordered by a particular doctor.…

A: Lets write the business logic first. The business rules between PATIENT and ORDER will be.• A…

Q: Who or what is an Abstract Data Type (ADT)? What exactly are the advantages of ADTs? When it comes…

A: ADT:- Abstract Data type (ADT) is a sort (or class) for objects whose conduct is characterized by a…

Q: Consider that a system has two entities, Student and Course. The student has the following…

A: Actually, given information: Consider that a system has two entities, Student and Course. The…

Q: Draw a database ER model about airport Covid-19 procedure (can include entities like passenger,…

A: ER diagram will contain Airport Flight Worker/ Employee Ticket Store Supplier and all their…

Q: Consider that a system has two entities, Student and Course. The student has the following…

A: Actually, given information: Consider that a system has two entities, Student and Course. The…

Q: I suggested in Section 29.1 that the objects manipulated by users should be drawn from their domain…

A:

Q: 25. In which of the following situations, modules are said to be highly coupled? Function calls…

A: Coupling is the measure of the degree of interdependence between the modules.

Q: This problem is concerned with modeling of a database that contains information about employees of…

A: According the given question employees of academic institutions can be related by knowing their…

Q: The resulting list for each object consists of ordered pairs , which define all domains with a…

A: Answer: The right choice is option B. Access list for objects   Access lists for objects: Method of…

Q: an educational institution wishes to maintain a database of its employee the data bases divided into…

A:

Q: Question 13 Which of the following are not true about data structures? A It is an organization of…

A: Data structures fill in as the reason for unique information types (ADT). The ADT characterizes the…

Q: 1- EMPLOYEE( eid, eName, eAge, eCity, eRank, eDep) 2- PROJECT ( pid, pName, pBonusAmout) 3-…

A: CREATE TABLE EMPLOYEE (Eid INT PRIMARY KEY,ENAME VARCHAR(20), EAGE INT CHECK (EAGE BETWEEN 18 AND…

Q: Consider that a system has two entities, Student and Course. The student has the following…

A: #include<iostream>#include<cstdlib>#include<string> using namespace std; //…

Q: ER Modeling    Suppose you are given the following requirements for a simple database for the…

A: Database: Each and every organization contains a certain amount of data, all these need to be…

Q: Suppose you are given a data set that classifies each sample unit into one of four categories: A, B,…

A: The qualitative data is the information made up of symbols, or simple names, which means they can't…

Q: hey can you draw database schema for this class diagram deal with- user System - name:String -…

A:

Q: Consider that a system has two entities, Student and Course. The student has the following…

A: Actually, given information: Consider that a system has two entities, Student and Course. The…

Q: The form of data model in which the concepts provided are useful for end users and are also close to…

A: Given that, The form of data model in which the concepts provided are useful for end users and are…

Q: Store the following fields for a library database: AuthorCode, AuthorName, BookTitle,…

A: Entities are: Author Publisher Book Borrower As per given, the keypoints are: one-to-many…

Q: hat are the different types of Inheritance?

A: Required: What are the different types of Inheritance? Discuss each.

Q: A user can request a quiz for the system. The system picks a set of questions from its database, and…

A: To develop a browser-based training system, below information is provided to us in the question :…

Q: Exercise 1 Part 2 Consider the following information about the university database, D Professars…

A: The ER Diagram that follows is based on the information provided in the university question.

Q: NINO DOB Address Tel Religion Name Name (1.3) (1.1) Patient H Next of Kin Nuraina Hame Na (1,1)…

A: the patient entity is further divided into two disjoint classes which are day care and resident…

Q: External Entities may be a

A: External entities is used to define and understand the sources and destinations of information…

Q: Consider a MAIL_ORDER database in which employees take orders for parts from customers. The data…

A: Given. DRAWING ER DIAGRAM AND RELATIONAL SCHEMA

Q: Aggregation is which of the following? a. Expresses a part-of relationship and is a stronger form of…

A: Required:   Aggregation is which of the following? a. Expresses a part-of relationship and is a…

Q: he question of this part analyzes the students’ understanding in analyzing the given scenario and…

A: GIVEN: The question of this part analyzes the students’ understanding in analyzing the given…

Q: Complete the ERD below by dragging the ends of crows feet and the specialization hierarchy symbols…

A: Key points: If the parent class can be a member of multiple specialized subclasses then it is an…

Q: that we are going to design a system to Manage loans from the local public library For this we will…

A: Actually, given information: The data for a Book will contain at least the following:AuthorTitleISBN…

Q: Complete the ERD below by dragging the ends of crows feet and the specialization hierarchy symbols…

A: The specialization for Truck, Trailer and Automobile tables is disjoint type and complete.…

Q: The next best alternate after BCNF is 3NF.  We can say that this schema is 3NF but not BCNF.  Match…

A: The answer has given

Q: What is a derived attribute? Give an example. What are the advantages ordisadvantages of storing or…

A: Given: What is a derived attribute? Give an example. What are the advantages ordisadvantages of…

Q: 3) Draw a domain class diagram according to the below scenario: Suppose that you are designing a…

A: Actually, UML stands for Unified Modeling Language.

Q: Given that a student must have a class. If class has as primary key ClassID, what foreign key…

A: Answer D) ClassID

Q: 1. The table shows a class list for the XYZ UNIVERSITY, convert this user view to a set of 3NF…

A: Convert the user view to 3NF relations:   The class list of XYZ UNIVERSITY for First semester is…

Q: 1) Storing same data in many places is called a) iteration b) redundancy c) concurrency d)…

A:

Q: Sub Class and Super Class belongs to model. O a. ER b. Dimensional C. EER d. Relational Which of the…

A: Given: Choose correct answer.

Q: Data collection takes place in which of the following activities? Multiple Choice Output. Review.…

A: Solution :

Q: Consider a MAIL_ORDER database in which employees take orders for parts from customers. The data…

A: An entity relationship diagram (ERD) shows the relationships of entity sets stored in a database. An…

Q: A sales system is built using Java. The database used is MySQL with the DB name 'Sales' and has a…

A: As you have posted multiple questions, we will solve the first question for you. The database and…

Q: 4. Consider the following GRADEBOOK relational schema describing the data for a grade book of a…

A: Relation schema defines the design and structure of the relation like it consists of the relation…

Q: When will the reference count of a managed object be increased by 1?     The reference count is…

A: Dear Student, Here the first line is incorrect the reference count is set when the manager object is…

Types of database architectures

A Database Architecture represents the Database Management System’s (DBMS) design (schema). The DBMS architecture makes it easy to understand the components involved in the database system and their relations. The DBMS architecture may vary based on the system on which it runs. Some systems contain both client and server machines whereas some run only on a server machine. Based on the architecture, the system can be classified as centralized, decentralized, or hierarchical.