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Database
Modeling Data In The Organization
Quiz 1
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Q.1
A derived attribute is an attribute whose values can be calculated from a related relationship.
True
False
Q.2
A fact is a word or phrase that has a specific meaning for the business.
True
False
Q.3
A relationship is an association representing the interaction between attributes.
True
False
Q.4
A binary relationship is a relationship between two or more entities.
True
False
Q.5
A strong entity is an entity whose existence depends on some other entity type.
True
False
Q.6
Multiple and binary relationships are the same thing.
True
False
Q.7
Some business rules cannot be represented in common data modeling notation.
True
False
Q.8
A time stamp is a time value that is associated with a data value.
True
False
Q.9
No two attributes of the same entity type should have the same name.
True
False
Q.10
A logical representation of the data for an organization or for a business area is known as an entity-relationship model.
True
False
Q.11
An attribute is a person, place, object, event in a user environment.
True
False
Q.12
Output reports should be included as part of an ERD.
True
False
Q.13
Cardinality specifies the number of instances of one entity that can be associated with each instance of another entity.
True
False
Q.14
Relationships cannot have attributes.
True
False
Q.15
Business rules and policies are universal.
True
False
Q.16
A composite attribute is which of the following?
An attribute that can be broken into components
An attribute that cannot be broken into components
Multiple attributes
An identifier
Q.17
A binary relationship cannot be which of the following?
One-to-One
One-to-Many
Many-to-Many
Zero-to-Zero
Q.18
A ternary relationship involves how many entities?
3 or less
3
More than 3
3 or more
Q.19
A rectangle represents which of the following in an ERD?
Attribute
Entity
Optional One
Relationship
Q.20
An entity name should be which of the following?
A singular noun
Specific to the organization
Concise
All of the above
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