SAD Quiz 5 Finals BSIT 2D

1. What is data modeling primarily used for?

• Programming a system

• Organizing and documenting a system's data

• Designing user interfaces

• Developing software applications

1. What does an Entity Relationship Diagram (ERD) depict?

• User interactions

• System workflows

• Data in terms of entities and relationships

• Software architecture

1. Which of the following is NOT a classification of an entity?

• Places

• Concepts

• Activities

• Events

1. What term describes a single occurrence of an entity?

• Attribute

• Key

• Entity instance

• Domain

1. Which attribute consists of other attributes?

• Primary attribute

• Compound attribute

• Key attribute

• Foreign attribute

1. What defines the legitimate values an attribute can take on?

• Domain

• Data type

• Default value

• Key

Which type of key uniquely identifies an instance of an entity and consists of multiple attributes?

• Primary key

• Candidate key

• Alternate key

• Concatenated key

1. Which type of relationship exists between two entities?

• Unary relationship

• Binary relationship

• Ternary relationship

• Recursive relationship

1. What is an associative entity?

• An entity with its own primary key

• An entity that does not have a primary key

• An entity that inherits its primary key from other entities

• An entity that does not participate in relationships

1. What is a foreign key?

• A primary key of an entity used in another entity

• An alternate key of an entity used in another entity

• A unique identifier within a single entity

• An attribute that defines the data type