Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask DBMS Expert


Home >> DBMS

problem 1:

Can a set of the data requirements be correctly modelled by two or more dissimilar ER diagrams? Elucidate your answer. You might use a small illustration, if you think it will assist your explanation.

problem2:

Map the following E-R model in the relational schema, concisely outlining the procedure and clearly showing the relation names, primary keys, attributes and foreign keys.

2101_ER model.jpg

problem 3:

Draw the ER diagram for following description. Demonstrate only the entity types (disregard the attributes), the relationships between them and multiplicity of each relationship.

A company specialises on IT training. At the time being, the company has 20 instructors, offers 30 courses and can handle the maximum number of 600 trainees. But, these numbers might rise in the future. Each trainee registers for the minimum of 1 and maximum of 3 courses. The number of trainees which can register for a course is not limited. Each course is assigned to maximum number of 5 instructors. A course might be assigned to no instructors, if there are no trainees registered for it. An instructor might be assigned to a maximum of 10 courses. Each course is organised in 10 sessions.

Each session is taught by one instructor, only. An instructor might be in charge of any number of sessions (obviously, an implicit constraint exists, namely that instructor can’t be in charge of more than 100 sessions, but you might disregard this constraint).

DBMS, Programming

  • Category:- DBMS
  • Reference No.:- M99538

Have any Question? 


Related Questions in DBMS

Consider a typical sales invoice that would include the

Consider a typical sales invoice that would include the following information. Design a single table to hold all of the information required to store an invoice including this information. Next, apply normalization to re ...

Assignment database modeling and normalizationimagine that

Assignment: Database Modeling and Normalization Imagine that you work for a consulting firm that offers information technology and database services. Part of its core services is to optimize and offer streamline solution ...

How up-to-date should data warehouse information

HOW UP-TO-DATE SHOULD DATA WAREHOUSE INFORMATION BE? Information timeliness is a must in a data warehouse-old and obsolete information leads to poor decision making. Below is a list of decision-making processes that peop ...

Here is two assignment one is only summery of project from

Here is two assignment one is only summery of project from first assignment, in powerpoint. pleasedont copy and paste, it will be verified by software for plagiarism. please cite all sources by APA format. due date is 26 ...

Option simulation preparation paperby the end of module 2

Option : Simulation Preparation Paper By the end of Module 2, you will have received the URL, team name (also known as logon ID), and password for the Littlefield Simulation site from your instructor. This week, you must ...

Hotel reservationsproject descriptionthe main portion of

Hotel Reservations Project Description: The main portion of the resort is the hotel. The hotel wants to store information about hotel guests, reservations, and rooms. You will design tables, import data from Access and E ...

Taskoverview of business casealive amp boating aampb is a

Task Overview of business case: Alive & Boating (A&B) is a small start-up company that sells small boats in Wagga. A&B keeps its models in several showrooms across the city. At this stage customers cannot view the availa ...

Benefits of data protection controlsbased on what you have

Benefits of Data Protection Controls Based on what you have learned about data protection in an online environment, prepare a 5-slide presentation to a department head or the CEO of a company to convince the audience tha ...

Organizations want information organizations need

Organizations want information. Organizations need information. However, information must be in an organized format that supports the creation of business intelligence. Otherwise, according to Rebecca Wettemann, vice pre ...

Computer sciencein reference to your database design

Computer Science In reference to your Database Design Proposal: Proposal Outline, provide a narrative analysis of the customer and user needs by defining the customers and users as well as describing their individual nee ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro