Database Systems: Design Implementation & Management
11th Edition
ISBN: 9781305850378
Author: Coronel
Publisher: Cengage
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Chapter 13, Problem 14RQ
Program Plan Intro
Star Schema:
- Star schema is used in
database with multiple dimensions. - The star schema is very parallel to the snowflake schema.
- A schema in which different tables are related to fact table, with the help of foreign key or primary key is known as star schema.
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Chapter 13 Solutions
Database Systems: Design Implementation & Management
Ch. 13 - Prob. 1RQCh. 13 - Prob. 2RQCh. 13 - Prob. 3RQCh. 13 - Prob. 4RQCh. 13 - Prob. 5RQCh. 13 - What is a data warehouse, and what are its main...Ch. 13 - Prob. 7RQCh. 13 - Prob. 8RQCh. 13 - Prob. 9RQCh. 13 - Prob. 10RQ
Ch. 13 - Prob. 11RQCh. 13 - Prob. 12RQCh. 13 - Prob. 13RQCh. 13 - Prob. 14RQCh. 13 - Prob. 15RQCh. 13 - Prob. 16RQCh. 13 - Prob. 17RQCh. 13 - Prob. 18RQCh. 13 - Prob. 19RQCh. 13 - Prob. 21RQCh. 13 - Prob. 22RQCh. 13 - Prob. 23RQCh. 13 - Prob. 24RQCh. 13 - Prob. 25RQCh. 13 - What is the SQL command to list the total sales by...Ch. 13 - What is the SQL command to list the total sales by...Ch. 13 - What is the SQL command to list the total sales by...Ch. 13 - What is the SQL command to list the total sales by...Ch. 13 - What is the SQL command to list the number of...Ch. 13 - What is the SQL command to list the number of...Ch. 13 - What is the SQL command to list the number of...Ch. 13 - Using the answer to Problem 10 as your base, what...
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- A logical data flow diagram differs from a physically structured data flow diagram in that it shows the flow of data logically. A data warehouse's most critical component, what is MetaData? What makes it so important?arrow_forwardDirect connections between external entities and the database are not permitted. This is one of the data flow diagram design concepts to consider. What does this advice imply?arrow_forwardDatabase design is a crucial phase during the database life cycle (DBLC).John is the CEO of a company that produces large-scale online educationpackages. The company has decided to start from scratch with a brand new database system. He has approached you to assist him specifically with the Conceptual Design. John has provided you access to their previous system and has set up interviews for you with multiple employees that use the system. John has also requested a visual representation of the data to help him get an overview. As a businessman, John must make important decisions based on reports generated by the system. A list of the required reports has been sent to you. John has also indicated that their data will be hosted across multiple sites due to thelarge amounts of data that have to be stored.Fully explain to John how you will approach the Conceptual Design stage.Your answer must refer to the situation described above.arrow_forward
- When building a data model, what is the purpose of excluding some data items?arrow_forwardData flow diagrams may be classified as either "logical" or "physical." A data warehouse cannot function without MetaData.arrow_forwardDirect connections between external entities and the database are not permitted under any circumstances. It should be kept in mind as one of the data flow diagram design concepts to consider. What do you think the repercussions of this suggestion will be?arrow_forward
- When compared to beginning a data modeling project with a blank sheet of paper, what are the advantages and disadvantages of employing a pre-packaged data model instead?arrow_forwardDirect database-external connections are prohibited. Data flow diagram design concepts include it. This advice implies what?arrow_forwardAssignment Brief: Some of the most difficult decisions that you face as a database developer are what tables to create and what columns to place in each table, as well as how to relate the tables that you create. Normalization is the process of applying a series of rules to ensure that your database achieves optimal structure. Normal forms are a progression of these rules. Each successive normal form achieves a better database design than the previous form did. Based on your understanding for the various normal form respond to the following problems and provide the optimal answer/solution. Problem#1: 1st Normal Form (1NF) Consider the Students table, with the primary key underlined, and the following data: Students: Alpha 100111 Email doe@usna.edu Name Courses GradePoints NN204, SI204, IT221 SM223, EE301 SI204 John Doe 2,3,3 Matt Smith 092244 113221 smith@usna.edu black@usna.edu 4,4 Melinda 3 Black NN204, SI204, IT221 090112 Tom Johnson Johnson@usna.ed 4,2,3 u a) Is the Students table…arrow_forward
- What are the advantages and disadvantages of beginning a data modeling project using a packaged data model vs starting with a blank sheet of paper?arrow_forwardWhen designing data environments with distributed data, it's important to make choices on how to strike a happy medium?arrow_forwardThe form of data independence in which the schema may be modified conceptually without affecting the exterior structure is referred as asarrow_forward
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