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Chapter 5: Managing Data Difficulties and Sources

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Chapter 5: Managing Data Difficulties and Sources

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Questions and Answers

What is the primary purpose of a Primary Key in a database?

Uniquely identifies a row of another table
Identifying information but typically does not identify the record with complete accuracy
Uniquely identifies a record so it can be retrieved (correct)
Highly organizes data in fixed fields

Which type of data is described as being difficult to manage using traditional database management systems?

Structured data
Unstructured data
Foreign key data
Big data (correct)

What does a Data Dictionary provide information on in a database?

Relationships between entities
Each attribute such as name, key status, etc. (correct)
Cardinality of relationships
Primary Key values

What is the main characteristic of Explicit knowledge in an organization?

Consists of technical types of knowledge (A) Signup and view all the answers

In the context of databases, what is the purpose of a Foreign Key?

Uniquely identifies a row of another table (B) Signup and view all the answers

What does an Entity-Relationship Diagram (ERD) help with in database planning?

Illustrating associations between entities (D) Signup and view all the answers

What is the correct order of data storage sizes from largest to smallest?

Kilobyte -> Megabyte -> Gigabyte -> Terabyte (D) Signup and view all the answers

Which of the following best describes master data?

A set of core data such as customer, product, employee, vendor, and geographic location (C) Signup and view all the answers

What is the purpose of a Database Management System (DBMS)?

To provide users with tools to create and manage a database (B) Signup and view all the answers

Which of the following best describes an instance in the context of a database?

A specific, unique representation of the entity (A) Signup and view all the answers

Which of the following is NOT a source of data mentioned in the text?

Social media posts and online forums (A) Signup and view all the answers

What does the term data model refer to in the context of a database?

A diagram that represents entities in the database and their relationships (B) Signup and view all the answers