20 Questions
Which of the following best describes an information system?
A system that captures, stores, manipulates, and retrieves data
What is a data model?
A conceptual representation of the data structures required by a database
What is an entity in a data model?
A class of persons, places, objects, events, or concepts about which data needs to be stored
What is an attribute in a data model?
A descriptive property or characteristic of an entity
What is a key in a data model?
An attribute, or a group of attributes, that assumes a unique value for each entity instance
What is an Entity Relationship Diagram (ERD)?
A schematic representation of the database
What is a synonym for an entity in a data model?
Table
What is a synonym for an attribute in a data model?
Property
What is a synonym for a key in a data model?
Primary key
What is a Data Element Dictionary (DED)?
A text representation of the data model
Which type of data model focuses on establishing entities, characteristics of an entity, and relationships between them?
Conceptual Data Model
Which type of data model is used to develop a technical map of rules and data structures for a specific project?
Logical Data Model
Which type of data model defines how data is physically stored in a database?
Physical Data Model
Which data modeling approach is the most common method used to build data models for relational databases?
Entity Relationship Modeling
What is the goal of data modeling?
To represent data objects accurately
What type of data model stores data in a single table?
Simple Data Model
What is the purpose of normalization in database design?
To eliminate data anomalies
Which normal form provides criteria for determining a table's degree of vulnerability to inconsistencies and anomalies?
First Normal Form
Which normal form eliminates only partial dependencies, but not transitive dependencies?
Second Normal Form
Which normal form eliminates all dependencies on non-key attributes?
Third Normal Form
Test your knowledge on data modeling and information systems with this quiz. Explore the concepts of databases, data models, and data organization.
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