creating a relation database schema
Q: Explain the Entity-Relationship model and its use in a database.
A: Intro In this question, we have to understand the Entity-Relationship model in the database. Let's…
Q: Normalized databases often exist to resolve structure anomalies. However, normalization may not…
A: Normalization may not comprise an efficient physical database structure implementation because the…
Q: Atuple in a database is: A A field. A record, An entity. A relation C D
A: A tuple is a row also known as one record stored in table.
Q: The use of composite attributes are avoided in relation schema when the relation schema conforms to…
A: The use of composite attributes, are avoided in a relation schema when it is said to be in First…
Q: Assume that the following figure is a part of Database relation in University Information…
A: Introduction:- The given figure shows the database schema with 5 columns and their respective keys…
Q: Computer Science: Why normalized relations may not compromise an efficient physical implementation…
A: Inconsistently stored data can create number of problems. A poorly designed database may provide…
Q: The objects in database description is called a. concept construct b. entity construct c. schema…
A: Given data is shown below: The objects in database description is calleda.concept constructb.entity…
Q: Define database model
A: Please find the answer below :
Q: Consider the following E/R diagram with isa relationships, in which every node represents an entity…
A: The given problem is related to Database modeling with IS-A relationship where IS-A relationship…
Q: model
A: Relation schema is used to visualize the design and structure of the relation like it consists of…
Q: In relational database menagement systems, what is a relation
A: In a relational database management systems, a relation is: A. A set of attributes B. An object C. A…
Q: The graphical representation of database description is called a. dynamic schema diagram b. schema…
A: The graphical representation of database description is called schema diagram so the correct option…
Q: It is the relation among individual entities and values. O principles patterns state relation
A: In Step 2, I have provided correct option-----
Q: Describe the differences in meaning between the terms relation and relation schema.
A: A relation schema is the combination of list of attributes and their related domain types. An…
Q: Construct a Relational Database Schema using this
A: Schema for the table “BANK” is as follows, Schema for the table “BANK_BRANCH” is as follows,…
Q: Regular entity type is transformed to a relation.
A: To be determine: Regular entity type is transformed to a relation.
Q: Define the term Well-structured relation?
A: Well-structured relation • A well-structured relation is defined as the phenomenon where the…
Q: Figure 2 shows an ER schema for a database that may be used to keep track of Pizza ordering system.…
A: Answer in step2 Note--since in E-R diagram cannot show foreign key so we are giving possible foreign…
Q: How can we define relation? Identify the characteristics that make up a relation.
A: The table in the relational database or the relationships created between the same tables using…
Q: Given the ER diagram below, create relation schemas to capture the database design.
A: Database Management System(DBMS) is a software for storing and retrieving users data while…
Q: Describe the Entity-Relationship model and its role in a database.
A: In this question we have to understand Entity Relationship model in database. Lets understand the…
Q: Discuss the database table options available when implementing subtype associations.
A: Note: we are allowed to answer a single question only at a time and submit this if you want a reply…
Q: Determine the keys and superkeys of the relation
A: An attribute (or combination of attributes) called a "Super Key" is used to identify each attribute…
Q: The association between two or more entities in a database system is classified as a. dynamic…
A: The relationship is the association between two or more entities in a database system.
Q: Using your own suitable example code and diagrams, explain how the following database concepts are…
A: Using your own suitable example code and diagrams, explain how the following database concepts are…
Q: Computer Science: Why normalized relations may not impair the efficiency of a physical…
A: The answer :
Q: Figure 3 shows an ER schema for a database that may be used to keep track of part of an University…
A: STUDENT(STUDENT_ID, HOBBY,DOB,STUDENT_NAME, ADDRESS, COURSE_ID) LECTUREE(LECTURER_ID, LECTURER_NAME)…
Q: hat is the candidate key of this relation?
A: Database Systems Question 5. A relation R is given which is R(A,B,C,D,E). It has the following…
Q: 2. The figure below shows part of an ER diagram. Map the part shown here to relational database…
A: A relational database schema is something which describes about the table. The schema includes the…
Q: List three common situations that suggest that relations be denormalized before database…
A: List three common situations that suggest that relations be denormalized before database…
Q: Describe the shorthand representation of the structure of a relational database.Illustrate this…
A: Given : Describe the shorthand representation of the structure of a relational database. Illustrate…
Q: How does a database differ from a relation?
A: Answer : The main difference between relation and relationship in DBMS is that relation refers to a…
Q: 2.4.14 Exercises for Section 2.4 Exercise 2.4.1: This exercise builds upon the products schema of…
A:
Q: Describe different types of constraints that we can consider when we define the database schema
A: Constraints are the laws that a table's data columns must follow. These are used to restrict the…
Q: What is the difference between a database and a relation?
A: Answer : The main difference between relation and relationship in DBMS is that relation refers to a…
Q: When mapping entities to one another for a relational database, there are several different…
A: Defined the mapping relationship in a relational database
Q: Databases: Describe six key aspects of relations that exist in databases.
A: Given: Databases: Describe six key aspects of relations that exist in databases.
Q: Databases: Give six important properties of relations.
A: The six important properties of relations are as follows: Values are atomic. Column values are of…
Q: Any relation that is not part of the logical model, but is made visible to a user as a a)Absolute…
A: 6.Any relation that is not part of the logical model, but is made visible to a user as a Any such…
Q: Consider the following database schema for student game, where each team is led by a student of the…
A: The primary key constraint uniquely identifies each record in a table. A foreign key is a field or a…
Q: An object-relational database management system (ORDBMS) is a database management system that stores…
A: ORDBMS is also known as object relational database management system.
Q: Explain the use of the terms relation, tuple, and attribute.
A: Answer: In the language of database historians, term relation is used to denote a Table. Each…
Q: Explain what can be done with primary keys to eliminate key ripple effects as a database evolves.
A: Eliminating key ripple effects: A ripple effect is caused when the primary key of a relation is…
Q: A data model is: A Used to describe structure of a database. B Set of basic operations on the…
A: Data models define how the logical structure of a database is modeled. The data model is a…
Q: 16.A row in a relation is calledSingle line text. (1 Point) 17.A value of foreign key can be…
A: Since you have posted a question with multiple sub-parts, according to the company's policy we will…
Q: Define transitive dependence in the context of databases.
A: Before we can understand what transitive dependency is, we must know what a functional dependency…
Q: explain about relationship degree in Database Management Systems and give an example
A: Answer : In database management system the relationship degree is the degree which indicates that…
Q: the concept of a business rule and how it relates to database architecture.
A: The concept of a business rule and it relates to database architecture
creating a relation
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- Urgent! 38.This is an example of an asymptotic notation that captures the overall behavior of an algorithm or mathematical function for large input values. a.Generic Integer b.Stack Integer c.Big-O notation d.Variable InstanceDijkstra's algorithm Weight Class Implementationlanguage : C++ Note : Skelton Files Provided Please check the linksproject Details:https://ece.uwaterloo.ca/~dwharder/aads/Projects/5/Dijkstra/ Files:https://ece.uwaterloo.ca/~dwharder/aads/Projects/5/Dijkstra/src/ Please provide clear and complete solution for thumps up.Why My function browse () and order() don't work when I choose choice 2 or 6 ??? Thanks #include<iostream>#include <fstream>#include<string>using namespace std;#define M 100int count = 0;struct AddressBook{ string FullName; string Birthday; string Address; string Email; string PhoneNumber;}Person[M];void WriteToFile ();void add ();void browse ();void searchByName ();void searchByBirthday ();void removeContact ();void order (); int main (){ int choice; do { cout << "Please Enter Your Choise: \n"; cout <<" 1-Add New Person\n 2-Browse\n 3-Search By Full Name \n 4-Search By Birthday \n 5-Remove a Person" << "\n 6-Alphabetical Order \n 7-Exit\n"; cin >> choice; switch (choice) { case 1: add (); break; case 2: browse (); break; case 3: searchByName (); break; case 4: searchByBirthday (); break; case 5: removeContact (); break; case 6: order (); break;…
- Given a list of employees, create JAVA a simple program that allows the user to insert, delete, display,and search an employee. The program should input 10 full names of employees with employeenumber as linked list. Also, a list of menus should be displayed.These menus are Insert, Delete, Display and Search.A. Insert - allows the user to insert one employee at a time with corresponding ID numberwhich serves as their link. All employees to be inserted must be inserted at theend of the list. B. Delete – allows the user to delete the employee from the listC. Display – allows the user to display the list of employeesD. Search - allows the user to find a certain employeeThese menus should be in loop once you test every operation based on the listed menu. Use linked list as a data structure in generating a list of employees, andPerform basic operations that can be applied in a linked listWhat is printed? def user_print(user_list, my_mod=2, private=True):for counter, user in enumerate(user_list):user_name = user[ 1 ]user_email = user[ 2 ]if counter % my_mod != 0:print(f"{user_name}", end=' ')if private == False:print(f" {user_email}", end=' ')print() users = [ [0, 'Sue', 'sally@gmail.com'],[1, 'Joe', 'joe@gmail.com'],[2, 'Jan', 'jane@gmail.com'],]A.) This script, named build.sh gets as argument the path to a folder where to find a source file and builds the executable. B.) This script named script02.sh and take two arguments: a string to look for, and a path to the root folder to start the search from. The script should then explore recursively the folder hierarchy starting from the folder located at the path given as argument. At each folder encountered through the recursive search, the script should build a list of all text files in the folder and send this list, along with the target and the folder’s path, in a call to prog02 ( c program). The output of your script should have the following format: Recursive search for target <target> starting at <path> Search depth: <depth> Total number of folders: <number> Total number of text files: <number> <output produced by the C program>
- SE case study homework (PLAGIARISM WILL BE DETECTED !!!) Please provide an upload link for the file This case study is about a simplified Payphone coin system.1. The minimum price of a communication is 10 ryals.2. After the introduction of the currency, the user has 2 minutes to dial his number (this time iscounted by a time counter).3. The line can be free or busy.4. The Payphone consumes money as soon as the called person picks up and at each time unitgenerated by the counter.5. You can add pieces of money at any time.6. At the time of the hang-up, the balance of the currency introduced (the rest of the money) isreturned. Required work:From this statement, you are asked to:1. Establish the use case diagram of this statement.2. Construct a sequence diagram that describes the nominal scenario of Payphoning use case inthis statement.Students' class and test scores should be stored in a database using their index numbers. They just had to take three courses: English 101, Math (MATH 101), and Science (ENGL 101). (SCI 101). Tip: Use a mix of dictionaries and one of the following two approaches: lists or tuples.def upgrade_stations(threshold: int, num_bikes: int, stations: List["Station"]) -> int: """Modify each station in stations that has a capacity that is less than threshold by adding num_bikes to the capacity and bikes available counts. Modify each station at most once. Return the total number of bikes that were added to the bike share network. Precondition: num_bikes >= 0
- cs count =10for item in $*doecho $count $itemcount='expr $count -1'done what is the time giveintroduction to unixGiven a list of employees, create a simple program that allows the user to insert, delete, display, and search an employee. The program should input 10 full names of employees with employee number as linked list. Also, a list of menus should be displayed. These menus are Insert, Delete, Display and Search. A. Insert - allows the user to insert one employee at a time with corresponding ID number which serves as their link. All employees to be inserted must be inserted at the end of the list. B. Delete – allows the user to delete the employee from the list C. Display – allows the user to display the list of employees D. Search - allows the user to find a certain employee These menus should be in loop once you test every operation based on the listed menu. Use linked list as a data structure in generating a list of employees, and Perform basic operations that can be applied in a linked listPython task: Task OverviewYour task is to implement a variation of the classic word game Hangman, which involves playersguessing the letters in a word chosen at random with a finite number of guesses. While there arealternate versions such as category Hangman and Wheel of Fortune, which involve playersguessing idioms, places, names and so on, we will be sticking with the traditional version.If you are unfamiliar with the rules of the game, please read the following before starting:http://en.wikipedia.org/wiki/Hangman_(game). You can also play an online version here. Don’tbe intimidated - You’ll be given some skeleton code to get you started, it's easier than it looks! You will implement a function called main that allows users to play an interactive hangman gameagainst the computer. The computer should pick a word, and players should then try to guess lettersin the word until they win or run out of guesses.Here is the overarching behaviour we expect:1. The program should load a list of…
