1. I am unable to figure out about composite key. How to see if a schema requires a composite key or not?
Q: The ory oa mp a cks whe ete 2 s ire s f the cache e wt E hee wih 2Mocks per t tes blockof the m ory ...
A: The answer is
Q: I am trying to figure out why the sum at the end of my Java code is not working correctly. It keeps ...
A: import java.io.FileWriter; import java.io.File;import java.util.Scanner; public class Main{ publ...
Q: What effect will the internet of things (IoT) have on our daily lives? Justify your viewpoint using ...
A: the answer is given below:-
Q: What are the disadvantages of using Multichassis Link Aggregation (MLAG) to build very large, flat n...
A: It is very complex in itself. It is difficult to add switches. It is not flexible in nature.
Q: Information related to Veaam software.
A: Veeam Software is a private IT based company. Develops and provide backup (BaaS), disaster recovery ...
Q: Explain Moore’s law?
A: The answer is given below:-
Q: What is something that you've seen when someone has been presenting a PowerPoint that you find annoy...
A: Introduction: Here we are required mention the mistakes people do while presenting a power point pre...
Q: Write a C++ program to find the sum of a and b a is floor of num1 & b is ceil of num2. Both num1 & n...
A: Required:- Write a C++ program to find the sum of a and b a is the floor of num1 & b is ceil of ...
Q: Exercise 1.13 Convert the following unsigned binary numbers to decimal. Show your work. (a) 1010, (b...
A:
Q: the user requests a new channel from the new cell so that it can continue its communication. This is...
A:
Q: Explain the architecture of multithreaded multiprocessors.
A: Introduction: Multi-threaded multiprocessor architecture A multi-threaded multiprocessor design has ...
Q: What is the main purpose of regularization when training predictive models What is the role of a...
A: Regularization significantly reduces the variance of the model without substantial increase in its b...
Q: What kind of computing do you often undertake on your own computer: batch or interactive? Give insta...
A: Batch: Occupations with similar requirements are grouped together and routed via the PC as a group b...
Q: Variable x' is assigned to X19 Variable 'y' is assigned to X20 Assume the operation returns the abso...
A:
Q: Project 1: Caesar Cipher
A:
Q: public boolean move(int x, int y, int destX, int destY){ // TODO write this method ...
A: public boolean freeWayHorizontally(int xO, int yO, int xD) { //RIGHT if (xO < xD) { ...
Q: 25. In which phase of the SDLC is the IS solution developed? A. Planning B. Analysis C. Design D. No...
A: A software development life cycle or SDLC is a process that defines different stages that are neces...
Q: S-O-S is an internationally recognized distress signal. It consists of a sequence of 3 short signals...
A: Let's see the solution in the next steps
Q: How To Made Nfa Corresponding To The Closure Of An Fa
A: Introduction: How To Made Nfa Corresponding To The Closure Of An Fa
Q: As3. We are building and using flutter. We want to build a recommendation system based on user inpu...
A: Simply know that not everyone drives well, regardless of the fact that most people individuals feel ...
Q: What advantages does a multiprocessor system provide ?
A: Introduction: The following are some of the advantages of a multiprocessing system: Increased Throug...
Q: Please convert to 3rd Normal Form
A: Third Normal Form is a form that is already in First Normal Form as well as Second Normal Form and t...
Q: To the original MS-DOS file directory entry, MS-Windows added two extra date fields. What do you thi...
A: A directory is a place on your computer for files, In a hierarchical file system like Linux, MS-DOS,...
Q: What will be the output of the given program class A { int m-20, n-D30; void display() System.out.pr...
A: Task :- write the output for given Java code snippet.
Q: NW Q3) IP addressing operates at the network layer (Layer 3) of OSI, IP addresses must be able to id...
A: the answer is given below:-
Q: A microprocessor is a gadget that can do a wide range of functions.
A: A microprocessor programmable electronic device that reads binary instructions, accepts binary data ...
Q: Design DFA for the following over { a,b} (ii) All strings that has atleast two occurrences of b bet...
A: The Answer is in Below Steps
Q: Describe the processes and outcome of a preliminary inquiry.
A: Introduction: A preliminary inquiry is when a judge evaluates the facts in your case to determine wh...
Q: What will be the output of the given program class A { int m-20, n-30; void display() System.out.pri...
A: Problem Analysis: The problem is based on the basics of inheritance in java programming language.
Q: What are two of the allowed modes for opening a file?
A: a :- Opens a file for appending at the end of the file without truncating it. Creates a new ...
Q: How does the system secure the data integrity of the RAM? Why do we choose to write files on symmetr...
A: Intro Checksum Method of Ensuring Data Integrity in ROM : Each system must execute the checksum comp...
Q: 2'gn → n'g 2
A:
Q: 319 is a complax search criteria in the whare clause. a Count b. Predicate . GroupBy d Nane of ths a...
A: Note: This is a multiple-question-based problem. As per company guidelines, only the first question ...
Q: Which fibre is utilised to protect the inner core and prevent the cable from straining in fiber-opti...
A: Introduction: Fiber optic cable is a form of network cable that is commonly used to carry data. It i...
Q: I need some help with this JavaScript function please thanks. function _four( array ) Create a Java...
A: function _four(arr) { let numPassed = 0, numFailed = 0, total = 0; for (num of arr) { total ...
Q: Draw a non-deterministic automata to accept strings containing substring 0101. ?
A: The Answer is in below steps
Q: functions of a microprocessor
A: A microprocessor controls all functions of the CPU, or central processing unit, of a computer or oth...
Q: e) Find the moment of inertia of a hollow cylinder about the axis of the cylinder using a JAVA progr...
A: To write java code to find the moment of inertia of a hollow cylinder about its axis.
Q: Explain the concept of performance balance.? Explain the differences among multicore systems, MICs,...
A: The answer is given below:-
Q: In Matlab using ode23 comment, plot c,t graphs Data: Q=constant= 300 L/min, V= constant= 50 000 L, ...
A: Given that: Data: Q=constant= 300 L/min, V= constant= 50 000 L, t=0; C=Co,
Q: What is the CPU usage if 5 processes are operating at the same time and the CPU spends 30% of its ti...
A: Introduction: CPU utilization relates to how much a computer's processing resources are being used o...
Q: p) A federal agency studied the records about the number of job-related injuries at an underground c...
A: Answer: Hypotheses are: H0: The underlying distribution is Poisson distribution. Ha: The underlying ...
Q: How do you configure SSH agent forwarding so you don't have to copy the key each time you log in?
A: The answer is given below;-
Q: Will apps eventually make the web obsolete? What is your justification?
A: Introduction: Will apps eventually make the web obsolete? What is your justification?
Q: Write a C program containing a recursive function that will get the whole number quotient result of ...
A: Please refer to the following steps for the complete solution to the problem above.
Q: What is the definition of a local variable?
A: Solution - In the given question we have to define local variables.
Q: Provide me with the MATLAB code to swap the first and last row of the matrix given below, mat = 1111...
A: MATLAB Program:, clc;clear all;% declare the matrix mat = [1, 1, 1, 1; 2, 2, 2, 2; 3, 3, 3, 3; 4, 4,...
Q: Prove that C = {w|w has an equal number of 0s and 1s} is not regular. Consider the string s=0p1p.
A: If A is a regular language, then there is a number p (the pumping length) where if s is any string i...
Q: What does the counter1 provide at the end of this script? x=[ 30 e e 2 1 -1 -2 -3]; counter1=0; coun...
A: 1) The above script does below activites It Creates a vector x consisting of positive, negative and...
Q: put("Enter employee name: ") data.emp_pos = input("Enter employee position: ") data....
A: Flowchart of the code
1. I am unable to figure out about composite key. How to see if a schema requires a composite key or not?
2. I am also troubled to understand foreign key concepts.
Could you please give suitable examples for better understanding?
Thanks.
Step by step
Solved in 2 steps
- just answer true/false. a] There are three main components of ER model which are an entity, an attribute and a relationship. b] Composite attributes are attributes that can have many values. c] Database programming languages receive all application requests and translate them into the complex operations required to fulfill those requests.Discuss the database table options available when implementing subtype associations. Discuss the considerations you would use in choosing one design over the othersWrite the short answers for the given question. Answer in 3-5 line maximuт. A. Give examples of systems in which it may make sense to use traditional file processing instead of a database approach. Why? B. Why do we need mappings among schema levels? How do different schema definition languages support this architecture? C. Under what conditions can an attribute of a binary relationship type be migrated to become an attribute of one of the participating entity types? D. List any 2 cases where the use of a null value would be appropriate.
- Discuss the database table options available when implementing subtype associations.Discuss how traceability relations are classified, elicit a brief example that defines the classification context, and draw a diagram if necessary.For questions 1 through 3, state whether the statements are True or False (Do not provide any explanation or comment but only an answer of either True or False): 1. "Logical data model" is another term for requirements visualization. 2. The guidelines and methods for database requirements phase do not call for an iterative process. 비 a 3. The logical model serves as a blueprint for the conceptual database model.
- Covert the E-R diagram to relational schema.13. An unnormalized table means that: a. it has repeating groups. b. it has partial and transitive dependencies. c. it is in INF. d. it has no partial and transitive dependencies. 14. The four elements of a data model are Entities, Attributes, Relationships and a. Entity-Relationship diagram b. Primary Keys c. Supertypes and Subtypes d. ConstraintsSwing Jazz Club ERD Problem Follow the Simple Procedure for ERD diagramming to design an ERD using the following user provided information. Remember the ERD will eventually turn into the design for a database from a top down view. Make sure you resolve any many to many conflicts. Label an identifier or primary key and all pertinent attributes given. If an attribute is not readily apparent from the user information, then make one up that makes sense for the particular entity. Therefore, all entities should end up with at least an identifier and another attribute that makes sense. You may use any of the approaches shown by the book, though the ER-Model and Crow’s foot are the most common. Make sure you show entities, relationships, cardinality, and optionality. Swing Jazz Club The Swing Jazz Club teaches swing and jazz dancing and offers both private and group lessons. Swing Jazz charges $60 dollars per hour for a private lesson and $10 dollars per hour for a group lesson.…
- Produce a relational schema diagram that corresponds to the linked ER diagram for a database for the television show Saturday Night Live (SNL). Your relational schema diagram should include primary and foreign keys. Often-times in database system development, requirements will change after the conceptual data model has been drafted: in your rela- tional schema diagram, add the following three additional attributes: attribute “birth.date" for the relation schema Host; attribute “start.date" for the relation schema Writer; and attribute “salary" for relation schema Cast Member. Please refer back to the requirements in Question 6, for additional details that may constrain the design of the relational schema model. Use the tool linked to create an image. Hints: please carefully note that "rerun date", “address", and “phone" are multi-valued attributes; how would those be depicted in the relational schema diagram? Also, please carefully note the many-to-many relationships; how would those…Give a Relational Model that corresponds to the Entity-Relationship Diagram given below: address M M Participates 1 Евployee Project Uses Supplier 1 person married to lti is_Harried to City You can present this model as a Relational Database Schema or as a diagram. It must be clearly stated what primary and what foreign keys are and what the foreign keys reference. You may want to use the translation explained in Topic 2.2, but only provide your final result (don't show your working). In your schema you are supposed to use the same names for attributes and relations as given in the diagram.1. According to what you understand, what is the relationship between Functional Dependency and Normalization? 2. There are several attribute relationships, including partial dependency and transitive, give an example of the two relationships. 3. Why do we do the normalization stage in database design, especially in the logical stage?