Relational Model of Data Define the following terms as they apply to the relational model of data: domain, attribute, n-tuple, relation schema, relation state, degree of a relation, relational database schema, and relational database state. Why are tuples in a relation not ordered? Why are duplicate tuples not allowed in a relation? What is the […]
Choose a database application with which you are familiar. Design a schema and show a sample database for that application, using the notation of Figures 1.2 and 2.1.
ASSIGNMENT Think of different users for the database. What types of applications would each user need? To which user category would each belong, and what type of interface would each need? Database System Concepts and Architecture Choose a database application with which you are familiar. Design a schema and show a sample database for that […]
Discuss the main characteristics of the database approach and how it differs from traditional file systems. What are the responsibilities of the DBA and the database designers?
Databases In this chapter we defined a database as a collection of related data, where data means recorded facts. A typical database represents some aspect of the real world and is used for specific purposes by one or more groups of users. A DBMS is a generalized software package for implementing and maintaining a computerized […]
Discuss the main categories of data models. What are the basic differences among the relational model, the object model, and the XML model?
Classification of Database Management Systems 2.1. Define the following terms: data model, database schema, database state, internal schema, conceptual schema, external schema, data independence, DDL, DML, SDL, VDL, query language, host language, data sublanguage, database utility, catalog, client/server architecture, three-tier architecture, and n-tier architecture. 2.2. Discuss the main categories of data models. What are the […]
Identify some informal queries and update operations that you would expect to apply to the database shown in Figure 1.2. What is the difference between controlled and uncontrolled redundancy?
Database Identify some informal queries and update operations that you would expect to apply to the database shown in Figure 1.2. What is the difference between controlled and uncontrolled redundancy? Illustrate with examples. Specify all the relationships among the records of the database shown in Figure 1.2. Give some additional views that may be needed […]
Provide a brief summary of an article up on Blackboard (Week 13) focusing on a racial minority. What does it tells us about race in sport today?
Assignment Create a new Word document without your name. You will be graded on the clarity, composition, use of important concepts and depth of your argument(s). Provide a brief summary of an article up on Blackboard (Week 13) focusing on a racial minority. What does it tells us about race in sport today? What are […]
What are the odds of responding “yes” for a female subject who is 60 years old? What is the estimated odds ratio corresponding to the age variable?
Calculate Odds within Logistic Regression Model A survey was conducted and asked: “Do you consider your health to be poor?” This was coded as 1 for “yes” and 0 for “no.” The effect of age (in years) and sex (1 = male, 0 = female) on the outcome was examined using logistic regression. The fitted […]
Write a 4-6-page scene. Include a description of where this scene would fall in the book and how this would impact the ending of the novel.
Writing – Scene You finished reading the novel, and you would like to add or modify a scene. You can make up a new character, rewrite an existing character’s scene, or write the scene with you as the character. Write a 4-6-page scene. Include a description of where this scene would fall in the book […]
Identify and describe any risks and consider what further information you would need to gain a full understanding of the child’s health.
THE ASSIGNMENT Review this week’s Learning Resources and consider factors that impact the validity and reliability of various assessment tools and diagnostic tests. You also will review examples of pediatric patients and their families as it relates to BMI. Based on the risks you might identify consider what further information you would need to gain […]
Submit your full program code, including thorough comments describing what each portion of the program should do when working correctly.
Python Journal. For this project, you will learn how to effectively plan, design, develop, and test an original program of your choosing. This program is your choice and it can be as complex as you wish. This includes planning out the algorithm using pseudocode, coding your program using everything you learned from Units 1-3, and […]