Modern Database Management
13th Edition
ISBN: 9780134792293
Author: Hoffer
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 9, Problem 9.37PAE
Program Plan Intro
(a)
To design:
A star schema for the given information.
Program Plan Intro
(b)
To estimate:
The number of rows in the fact table.
Program Plan Intro
(c)
To estimate:
The total size of the fact table assuming average 15 bytes for each field.
Program Plan Intro
(d)
To find:
Another way to change the design of this data mart.
Program Plan Intro
(e)
To propose:
A design for star schema to allow the slow changes in the entities over the time.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Draw an E-R data model for the Garden Glory database and Use the IE Crow’s Foot E-R model for your E-R diagrams. Justify the decisions you make regarding minimum and maximum cardinality.
The set of 7 attributes is { desc, drought, price, sci, size, store, zones }
The attributes are for plants for sale at different stores
The dependencies are:
{sci, store, size} -> {price}
{sci} -> {desc, drought, zones}
"desc" is the description of the plant
"drought" is whether the plant can survive with less water
"price" is the price of the plant
"sci" is the scientific name of the plant
"store" is the name of a store that sells the plant
"zones" indicates which climate zones the plant will grow in
What is the key for the complete set of attributes?
a. price
O b. sci, store and size
c. desc, drought and zones
d. sci
Create an Entity-Relationship Model for the
Queen Anne Curiosity Shop
The first assignment for the class project is to create an entity-relationship model of the Queen Anne
Curiosity Shop database. This assignment requires you to apply the knowledge gained from study of
chapter 4 of the textbook. You will create the entity-relationship model using the ERDPlus database
modeling tool.
The Queen Anne Curiosity Shop database contains the following tables:
CUSTOMER (CustomerID, LastName, FirstName, Address, City, State, ZIP, Phone,
EmailAddress)
EMPLOYEE (EmployeeID, LastName, FirstName, Phone, EmailAddress)
VENDOR (VendorID, CompanyName, ContactLastName, ContactFirstName, Address, City,
State, ZIP, Phone, Fax, EmailAddress)
ITEM (ItemID, ItemDescription, PurchaseDate, ItemCost, ItemPrice, VendorID)
SALE (SaleID, CustomerID, EmployeeID, SaleDate, SubTotal, Tax, Total)
SALE_ITEM (SaleID, SaleItemID, ItemID, ItemPrice)
Note that the above table descriptions follow the textbook convention:…
Chapter 9 Solutions
Modern Database Management
Ch. 9 - Prob. 9.1RQCh. 9 - Prob. 9.2RQCh. 9 - Prob. 9.3RQCh. 9 - List the five major trends that necessitate data...Ch. 9 - Prob. 9.5RQCh. 9 - Prob. 9.6RQCh. 9 - Prob. 9.7RQCh. 9 - Prob. 9.8RQCh. 9 - Prob. 9.9RQCh. 9 - Prob. 9.10RQ
Ch. 9 - List four objectives of derived data.Ch. 9 - Prob. 9.12RQCh. 9 - Prob. 9.13RQCh. 9 - Explain the pros and cons of logical data marts.Ch. 9 - Prob. 9.15RQCh. 9 - What is a helper table, and why is it often used...Ch. 9 - Describe the characteristics of a surrogate key as...Ch. 9 - Prob. 9.18RQCh. 9 - What is the purpose of conformed dimensions for...Ch. 9 - Prob. 9.20RQCh. 9 - Prob. 9.21RQCh. 9 - Prob. 9.22RQCh. 9 - Prob. 9.23RQCh. 9 - Prob. 9.24RQCh. 9 - Prob. 9.25RQCh. 9 - Describe the current key trends in data...Ch. 9 - Discuss the benefits of offering data warehousing...Ch. 9 - Prob. 9.28RQCh. 9 - List six typical characteristics of reconciled...Ch. 9 - Prob. 9.30RQCh. 9 - Prob. 9.31RQCh. 9 - Prob. 9.32RQCh. 9 - Prob. 9.33RQCh. 9 - Describe some field-level and record-level data...Ch. 9 - Prob. 9.35PAECh. 9 - Prob. 9.36PAECh. 9 - Prob. 9.37PAECh. 9 - Prob. 9.38PAECh. 9 - You are to construct a star schema for Simplified...Ch. 9 - Simplified Automobile Insurance Company would like...Ch. 9 - Prob. 9.41PAECh. 9 - Prob. 9.42PAECh. 9 - Prob. 9.43PAECh. 9 - Prob. 9.45PAECh. 9 - Prob. 9.46PAECh. 9 - Prob. 9.47PAECh. 9 - Prob. 9.48PAECh. 9 - Prob. 9.49PAECh. 9 - Prob. 9.50PAECh. 9 - Prob. 9.51PAECh. 9 - Prob. 9.52PAECh. 9 - Prob. 9.53PAECh. 9 - Prob. 9.54PAE
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Considering the un-normalized relational table PROJECT below: PROJECT (ProjectTitle, EmpeName, ManagerName, Location, HoursWork, ManagerPhone) The attributes of PROJECT table satisfy the following properties: Each project has many employees, Each employee may involve in one or more projects, Projects are managed by managers; there are many managers in the company, hence a project may be assigned to any one of the managers, but each manager manages only one project. Each project is located in a specific location, The number of hours an employee works at each project is determined by a project title and the name of an employee. Each manager has a telephone number. Normalize the relational table PROJECT into a minimal number of relational tables in BCNF. Use the functional dependencies to prove that each one of the relational tables obtained from the decomposition of the original table is in BCNF.arrow_forwardConsider the following Staff relational schema: STAFF (STAFFNO, NAME, DOB, GENDER, DOJ, DESIGNATION, BASIC_PAY, DEPTNO)arrow_forwardExplain why an index is only helpful if an attribute's values are sufficiently diverse.arrow_forward
- Instructions: Create a dimensional model for a particular business process involving gym membership. A customer can sign up for a membership of say one, three, six or twelve months. I want to make it easy to query to identify current members, members who expired in the last month, members who renewed in the last month, those who are pending expiry etc. If I have a basic model with a fact table representing a gym membership say start_date_key end_date_key membership_attribute_key customer_atrribute_key fee with associated dimension table for date, membership attributes such as length, customer attributes and so forth. On a particular day, the active members are those with a start date before the day and an end date after that day. Those who will expire next month are those where the end date is in a particular date range.arrow_forwardWrite out a relational schema for the following ERDarrow_forwardQUESTION 6 The attributes made up of more than one single attributes are called Single Value Composite Multi-value Derivedarrow_forward
- Required: Convert the E-R diagram you designed in last exercise into a relational database schema. Recommended: Convert the E-R Diagram of following Fig to a relational database schema. DeptNO, DeptBudget, ChiefNO OfficeNO, Area ProNO, Budget 1 n Includę 1 Charge n Office Dept Project 1 1 Include Include n Join m Phone Employee PhoneNO, Туре No, Name, TelNoarrow_forwardto de Category 15 PK to do id PK category id name description create date 18 deadine FK categoryid FK user id create date user PK user id first name last name email create_date The above ER Diagram shows a simple TODO tasks management database. The create table script for Category table is given to you below. Complete the script by providing the correct definitions of the other two tables. Choose the data types of each attribute and assume all primary keys to be auto incrementing integers. Create Table Category ( user_id int primary Key identity(1,1), name varchar(255),arrow_forwardCreate an ER model related to the following entities and relationships: Department, Student, Professor, Course, Section, Grade, Major. (For attributes inside each table, you only need to insert several reasonable attributes. No need to have a comprehensive list. For many-to-many relationship, you also need to insert one extra table to handle the many-to-many relationship. The final database design will have more tables than the number of entities listed above.) A given department can offer many courses. A given course can be offered by only one related department. A given course can have many related sections. A given professor can teach many sections. A given section can only be related to one course and taught by one professor. A given professor can have appointment with different departments A given department can have many professors. A given department can offer several majors. A given major can be offered by only one related department. A given student can have several majors. A…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill Education
Starting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSON
Digital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSON
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Programmable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education