Database Systems: Design, Implementation, & Management
13th Edition
ISBN: 9781337627900
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 2, Problem 22RQ
Program Plan Intro
Data Independence:
- “Data Independence” refers to the ability to modify a schema definition in one level without affecting a schema definition in different level.
- It is a type of data transparency, which focuses for a centralised DBMS.
- One of the biggest advantages of
databases is data independence. - There are two levels of data independence, one is “Physical data independence” and the other one is “Logical data independence”.
- One of the biggest advantages of
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Chapter 2 Solutions
Database Systems: Design, Implementation, & Management
Ch. 2 - Prob. 1RQCh. 2 - What is a business rule, and what is its purpose...Ch. 2 - How do you translate business rules into data...Ch. 2 - Prob. 4RQCh. 2 - Explain how the entity relationship (ER) model...Ch. 2 - Prob. 6RQCh. 2 - Prob. 7RQCh. 2 - Prob. 8RQCh. 2 - Prob. 9RQCh. 2 - Prob. 10RQ
Ch. 2 - What is a relationship, and what three types of...Ch. 2 - Give an example of each of the three types of...Ch. 2 - What is a table, and what role does it play in the...Ch. 2 - Prob. 14RQCh. 2 - Prob. 15RQCh. 2 - Prob. 16RQCh. 2 - Prob. 17RQCh. 2 - Prob. 18RQCh. 2 - Prob. 19RQCh. 2 - Prob. 21RQCh. 2 - Prob. 22RQCh. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Using Figure P2.6 as your guide, work Problems 68....Ch. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Typically, a hospital patient receives medications...Ch. 2 - Prob. 10PCh. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17P
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- Read the following case study and answer the questions below: The national football association elected a new president for them. The new president has many ideas for the national football association to unify football across the country. Therefore, he decided to create a system containing team’s information. This association is contained from many teams. In addition, each team has the following information: name, city, coach captain, and number of players. Each player has the following information: name, position, and skill level and injuries record. Each team may participate to at least one match a month. Therefore, each match has the following information: home team, away team, score, judge, match date. This system helps the fans to look for their favorite players and teams information, through logging to the system by entering his/her phone number, which in return the system will send a conformation message containing a code. The fan will enter the code to confirm his identity.…arrow_forwardRead the following case study and answer the questions below: The national football association elected a new president for them. The new president has many ideas for the national football association to unify football across the country. Therefore, he decided to create a system containing team’s information. This association is contained from many teams. In addition, each team has the following information: name, city, coach captain, and number of players. Each player has the following information: name, position, and skill level and injuries record. Each team may participate to at least one match a month. Therefore, each match has the following information: home team, away team, score, judge, match date. This system helps the fans to look for their favorite players and teams information, through logging to the system by entering his/her phone number, which in return the system will send a conformation message containing a code. The fan will enter the code to confirm his identity.…arrow_forwardRead the following case study and answer the questions below: The national football association elected a new president for them. The new president has many ideas for the national football association to unify football across the country. Therefore, he decided to create a system containing team’s information. This association is contained from many teams. In addition, each team has the following information: name, city, coach captain, and number of players. Each player has the following information: name, position, and skill level and injuries record. Each team may participate to at least one match a month. Therefore, each match has the following information: home team, away team, score, judge, match date. This system helps the fans to look for their favorite players and teams information, through logging to the system by entering his/her phone number, which in return the system will send a conformation message containing a code. The fan will enter the code to confirm his identity.…arrow_forward
- What are some instances of both the advantages and disadvantages of the concept of least privilege?arrow_forwardIs structural independence distinct from data independence?arrow_forwardWhat part do access restrictions play in the overall scheme of things in the modern world? Please be sure to include at least two distinct instances of access restrictions in your answer.arrow_forward
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