Modern Database Management (12th Edition)
12th Edition
ISBN: 9780133544619
Author: Jeffrey A. Hoffer, Ramesh Venkataraman, Heikki Topi
Publisher: PEARSON
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Chapter 2, Problem 2.43PAE
Program Plan Intro
Redraw the given figure 2-4a for the revised situation described as follows:
Consider a slightlydifferent situation. Suppose it is necessary, for compliancepurposes (e.g., Sarbanes-Oxley compliance), to know when each expense report was produced and which officers(not just the treasurer) received each expense report and when each signed off on that report.
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b. Draw an Entity Relationship diagram from each of the following descriptions. Include the attributes, primary keys (underlines) and the relationships in the diagram (like relationship in Access).
i. Each of the department has many employees assigned to it, but each employee works for only one department.
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• Each…
PLZ help with the following:
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For the following:
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Chapter 2 Solutions
Modern Database Management (12th Edition)
Ch. 2 - Define each of the following terms: entity type...Ch. 2 - Prob. 2.2RQCh. 2 - Contrast the following terms: stored attribute;...Ch. 2 - Prob. 2.4RQCh. 2 - Prob. 2.5RQCh. 2 - Prob. 2.6RQCh. 2 - State six general guidelines for naming data...Ch. 2 - Prob. 2.8RQCh. 2 - Prob. 2.9RQCh. 2 - State three conditions that suggest the designer...
Ch. 2 - List the four types of cardinality constraints,...Ch. 2 - Prob. 2.12RQCh. 2 - What is the degree of a relationship? List the...Ch. 2 - Give an example (Other than those described in...Ch. 2 - Give an example of each of the following, other...Ch. 2 - Give an example of the use of effective (or...Ch. 2 - State a rule that says when to extract an...Ch. 2 - Prob. 2.18RQCh. 2 - In addition to explaining what action is being...Ch. 2 - For the Manages relationship in Figure 2-12a,...Ch. 2 - Explain the distinction between entity type and...Ch. 2 - Why is it recommended that every ternary...Ch. 2 - A cellular operator needs a database to keep track...Ch. 2 - For each of the descriptions below, perform the...Ch. 2 - Answer the following questions concerning Figure...Ch. 2 - Prob. 2.26PAECh. 2 - You may have been assigned a CASE or a drawing...Ch. 2 - Consider the two E-R diagrams in Figure 2-25 Q,...Ch. 2 - The entity type STUDENT has the following...Ch. 2 - Are associative entities also weak entities? Why...Ch. 2 - Because Visio does not explicitly show associative...Ch. 2 - Figure 2-26 shows a grade report that is mailed to...Ch. 2 - Prob. 2.33PAECh. 2 - The Is Married To relationship in Figure 2-12a...Ch. 2 - Prob. 2.35PAECh. 2 - Figure 2-28 shows two diagrams (A and B), both of...Ch. 2 - Prob. 2.37PAECh. 2 - Review Figure 2-8LQ and Figure 2-22. Identify any...Ch. 2 - Prob. 2.39PAECh. 2 - Prob. 2.40PAECh. 2 - Prob. 2.41PAECh. 2 - Prob. 2.42PAECh. 2 - Prob. 2.43PAECh. 2 - Prob. 2.44PAECh. 2 - Prob. 2.45PAECh. 2 - Prob. 2.47PAECh. 2 - Prob. 2.48PAECh. 2 - Draw an ERD for the following situation. (State...Ch. 2 - Prob. 2.50PAECh. 2 - Prob. 2.51PAECh. 2 - Review your answer to Problem and Exercise 2-49 if...
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- To manage the materials of a factory, please give the E-R diagrams. Such entity sets are involved as below: Warehouse: with attributes as Number, area and telephone Accessory : with attributes as number, Name, Specification, price and description Supplier: with attributes as Number, name, address, telephone and асcount Project : with attributes as number and budget Employee : with attributes as number, name and agearrow_forwardFor each of the following pairs of related entities, indicate whether (under typical circumstances) there is a one-tomany or a many-to-many relationship. Then, using the shorthand notation introduced in the text, draw a diagram for each of the relationships.a. STUDENT and COURSE (students register for courses)b. BOOK and BOOK COPY (books have copies)c. COURSE and SECTION (courses have sections)d. SECTION and ROOM (sections are scheduled in rooms)e. INSTRUCTOR and COURSEarrow_forwardSuppose that we wish to keep a genealogy. The information we wish to record about each person includes their name, date of birth, phone number, and degrees obtained . We also need to keep track of the mother, father, and children of each person. Draw a complete Entity-Relationship diagram. You must include all the details, sad as keys, weak entities (if any), cardinality constraints, etc. Your diagram must avoid redundancy.arrow_forward
- draw Entity Relationship Diagram (ERD) for scenairo: “There is a group of employees who have run the website. Three admins are responsible to check registration forms filled by babysitters. An accountant is responsible to check fees payments. All these employees are supervised by the manager. Each babysitter can register on the website one time by filling in her data including first and last names, qualifications, fee rate per hour (25 SAR per Hour), contact information, address, photo, and years of experience. The system will issue for her id and registration date. Mothers can make booking as many as they need. For each time, they must fill in their names, contact information, address, number of children, the date and time (e.g. from 2:00 PM to 4:PM) of booking. The website will generate the booking report including mother’s data, babysitter’s contact data, number of booked hours, fee rate per hour, fees total amount, and tax (%5). To make a payment, the mother needs the…arrow_forwardApplying your knowledge in Enhanced Entity Relationship modeling, Develop an EER model for the following situation: A person may be employed by one or more organizations and each organization may be the employer of one or more persons. An organization can be internal organizational unit or an external organization. For persons and organizations, we want to know their ID, name, address and phone number. For persons we want to know their birthdate, and for organizations, we want to know their budget number. For each 6 employment, we want to know the employment date, termination date and bonus. Employment of a person by an organization may result in the person holding many positions over time. For each position, we know its title, and each time someone holds that position, we need to know the start date and termination date and salary. An organization is responsible for each position. It is possible for a person to be employed by one organization and hold a position for which another…arrow_forwardWe need to first make some adjustments to certain variables in Tableau and better understand the difference between Dimensions and Measures. Dimensions (shown as blue variable names) are normally attributes about certain transactions that can't be summed or otherwise quantified (e.g., dates, product numbers, invoice numbers, etc.), Measures (shown in green variable names), on the other hand, are normally the outcome variables we are most interested in (e.g., invoice total, quantity shipped, etc.). Sometimes, Tableau misclassifies these variables and we need to make changes before we can continue. In the shipping file, Tableau has classified Customer No. and Invoice No. as Measures instead of Dimensions. We need to set both of these as dimensions. • Right-click on Customer Number and press "Convert to Dimension." • Repeat the previous step for Invoice Number. What other "number" has been imported as a Measure instead of a Dimension? Please change it to a Measure Dimension using the…arrow_forward
- draw an E-R diagram that indicates the entity sets and their attributes. Identify and label significant relationship sets between pairs of entities, the degree of relationship sets and the cardinality and participation constraints.arrow_forwardQ2/II draw the entity relationship for each of the following: 1-" a student studies one or many modules and a module is studied by one or many students". 2-" a manager leads one or many employees and an employee is led by one and only one manager". 3-" a manager leads one or many employees and an employee is led by one and only one manager and if there is a manager who has no employees to lead". 4- "a classroom has one and only one lecturer to manage and a lecturer has one and only one classroom". 5- "each classroom has one or many students registered in and a student has one or many classrooms to be registered in".arrow_forwardDraw the associations that are described by the following business rules. Include the multiplicities for each relationship. (4 marks) A patient must be assigned to only one doctor, and a doctor can have one or many patient: An employee has one phone extension, and a unique phone extension is assigned to an employee. A bookstore sells at least one book, and a book can be sold at up to 10 other bookstores around town.arrow_forward
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