Database Principles and Applications, 4th Edition, Instructor‘s Manual122

Chapter 1. Introduction to Database Systems- 1.1 What is a database system?
* Instructor's Answer: A database system is a collection of interrelated data and the software that manages and provides access to the data.
- 1.2 Why use a database system?
* Instructor's Answer: To centralize and manage data, improve data quality, increase data security, enhance data accessibility, and facilitate data analysis.

Chapter 2. Data Modeling and Database Design- 2.1 Entity-Relationship (ER) modeling
* Instructor's Answer: A graphical representation of the entities, relationships, and attributes in a database.
- 2.2 Relational data model
* Instructor's Answer: A data model that represents data in tables, where each table has a primary key and columns that store specific data attributes.

Chapter 3. SQL: Data Definition and Manipulation- 3.1 Creating tables and inserting data
* Instructor's Answer: Use the CREATE TABLE and INSERT INTO statements.
- 3.2 Updating and deleting data
* Instructor's Answer: Use the UPDATE and DELETE statements.

Chapter 4. SQL: Data Retrieval- 4.1 Selecting data
* Instructor's Answer: Use the SELECT statement with WHERE, ORDER BY, and GROUP BY clauses.
- 4.2 Joining tables
* Instructor's Answer: Use the JOIN statement to combine data from multiple tables.

Chapter 5. Database Normalization- 5.1 Normalization basics
* Instructor's Answer: A process of organizing data into tables to reduce redundancy and improve data integrity.
- 5.2 Functional dependency
* Instructor's Answer: A relationship between two attributes where one attribute determines the value of the other.

Chapter 6. Data Integrity- 6.1 Integrity constraints
* Instructor's Answer: Rules that ensure data is accurate, complete, and consistent.
- 6.2 Primary and foreign keys
* Instructor's Answer: Keys used to relate tables and enforce referential integrity.

Chapter 7. Transactions and Concurrency Control- 7.1 Transactions
* Instructor's Answer: A group of operations that are treated as a single unit of work.
- 7.2 Concurrency control
* Instructor's Answer: Techniques to ensure that multiple users can access and update data simultaneously without data corruption.

Chapter 8. Database Administration- 8.1 Database maintenance
* Instructor's Answer: Activities such as backups, recovery, and performance tuning.
- 8.2 Database security
* Instructor's Answer: Measures to protect data from unauthorized access, use, and modification.

Chapter 9. Database Design and Development Projects- 9.1 Project planning and management
* Instructor's Answer: Establishing project scope, timeline, and responsible parties.
- 9.2 Database design and implementation
* Instructor's Answer: Applying principles and techniques covered in previous chapters.

2024-11-03

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