Podcast
Questions and Answers
What is the primary issue with having the dept_name attribute in both the Department and Employee relations?
What is the primary issue with having the dept_name attribute in both the Department and Employee relations?
Which of the following is the best way to relate the Department and Employee relations using the common dept_name attribute?
Which of the following is the best way to relate the Department and Employee relations using the common dept_name attribute?
Which of the following best describes the type of data model represented in the given text?
Which of the following best describes the type of data model represented in the given text?
What is the main issue with having the dept_name attribute in both the Department and Employee relations?
What is the main issue with having the dept_name attribute in both the Department and Employee relations?
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What is the best way to organize the data in the given text?
What is the best way to organize the data in the given text?
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What term is used to describe the presence of duplicate data in multiple files?
What term is used to describe the presence of duplicate data in multiple files?
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In the context of types of dependency in a table, what is the type where a value in one attribute uniquely determines a value in another attribute?
In the context of types of dependency in a table, what is the type where a value in one attribute uniquely determines a value in another attribute?
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What is the correct action to solve a dependency issue in a table?
What is the correct action to solve a dependency issue in a table?
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Which of the following best describes a database?
Which of the following best describes a database?
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Which feature is NOT a characteristic of DBMS?
Which feature is NOT a characteristic of DBMS?
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Study Notes
Data Modeling and Database Design
- Having the
dept_nameattribute in both theDepartmentandEmployeerelations creates a primary issue, as it leads to data redundancy and inconsistency.
Relating Department and Employee Relations
- The best way to relate the
DepartmentandEmployeerelations using the commondept_nameattribute is through a foreign key constraint.
Data Model Type
- The data model represented in the given text is a relational data model.
Issues with dept_name Attribute
- The main issue with having the
dept_nameattribute in both theDepartmentandEmployeerelations is data redundancy and inconsistency.
Organizing Data
- The best way to organize the data in the given text is to separate the
dept_nameattribute into a separate relation, eliminating data redundancy.
Duplicate Data
- The term used to describe the presence of duplicate data in multiple files is data redundancy.
Dependency in a Table
- The type of dependency in a table where a value in one attribute uniquely determines a value in another attribute is called functional dependency.
Solving Dependency Issues
- The correct action to solve a dependency issue in a table is to eliminate the dependency by separating the dependent attribute into a separate relation.
Database Definition
- A database is a collection of organized data that is stored in a way that allows for efficient retrieval and manipulation.
DBMS Characteristics
- NOT a characteristic of DBMS is data redundancy.
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Description
Test your knowledge on Database Management System concepts with this multiple-choice quiz featuring questions on related fields, data redundancy, dependencies, and normalization. Choose the correct answers and assess your understanding of database fundamentals.
