Database SQL Quiz8

A visually engaging illustration of a database schema, featuring interconnected entities and SQL code snippets, in a modern and colorful style.

Database SQL Fundamentals Quiz

Test your knowledge of database design concepts and SQL with this engaging quiz. Whether you are a beginner looking to grasp the basics or an experienced developer wanting to refresh your skills, this quiz covers essential topics from entity relationships to cardinality.

Key Features:

Multiple-choice questions
Instant feedback on your answers
Improve your understanding of SQL and database modeling

15 Questions4 MinutesCreated by QueryMaster317

A _____ attribute can be further subdivided to yield additional attributes.

Composite

Simple

Single-valued

Multivalued

A composite identifier is a primary key composed of more than one attribute.

True

False

A _____ relationship exists when three entities are associated.

Unary

Strong

Ternary

Weak

A _____ relationship exists when an association is maintained within a single entity.

Unary

Ternary

Strong

Weak

The existence of a mandatory relationship indicates that the minimum cardinality is 0 or 1 for the mandatory entity.

True

False

In the Chen and Crow's Foot notations, an entity is represented with a rectangle containing the entity's name.

True

False

Referential integrity and participation are both bidirectional, meaning that they must be addressed in both directions along a relationship.

True

False

_____ expresses the minimum and maximum number of entity occurrences associated with one occurrence of the related entity.

Connectivity

Relationship

Dependence

Cardinality

If an employee within an EMPLOYEE entity has a relationship with itself, that relationship is known as a _____ relationship.

Self

Self-referring

Looping

Recursive

An entity in the entity relationship model corresponds to a table in the relational environment.

True

False

The entity relationship model (ERM) is dependent on the database type.

True

False

A _____ attribute is one that cannot be subdivided.

Composite

Simple

Single-valued

Multivalued

Connectivities and cardinalities are established by concise statements known as business rules.

True

False

In the entity relationship diagram (ERD), cardinality is indicated using the _____ notation, where max is the maximum number of associated entities and min represents the minimum number of associated entities

(max, min)

(min, max)

[min ... max]

{min|max}

Ideally, an entity identifier is composed of _____ attribute(s).

One

Two

Three

Six

Database SQL Quiz8

Database SQL Fundamentals Quiz

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