Exam 6: Relational Databases and SQL

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The ______________________________ specifies the degree of minimum participation of one entity in the relationship with the other entity.

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REA stands for resources, entities and agents.

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The ______________________________ command is used when we want to change one or more attribute values for one or more tuples in a table.

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Which of the following is not a relationship type?

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The fundamental requirement for moving toward an event-driven model is the complete integration of data related to an organization's business events.

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A set of data that describes a single instance of the entity represented by a relation is known as a(n) ______________________________.

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The notation of (1,1) is used to specify the relationship type of one-to-many.

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The ______________________________ command is used to add new tuples to a relation.

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Relational integrity specifies that for every attribute value in one relation that has been specified to allow reference to another relation, the tuple being referenced must remain intact.

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A(n) ______________________________ is an item of data that characterizes an entity or relationship.

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The notation 1:N is used to specify the relationship type of ______________________________.

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Common aspects of business intelligence include:

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In an REA diagram, the rectangle is used to represent the composite attribute.

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The secondary key is specified to uniquely identity each tuple in the relation.

(True/False)
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Which of the following commands allow us to join data across multiple tables to link specific pieces of information that are of interest?

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Representing supervisors and their employees as separate entities in the model can lead to data redundancy.

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For the following entity and attribute model, what would be the key attribute of the Students entity? For the following entity and attribute model, what would be the key attribute of the Students entity?

(Multiple Choice)
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______________________________ is a powerful database language that can be used to define database systems, query the database for information, generate reports from the database, and access databases from within programs using embedded commands.

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A(n) ______________________________ relationship occurs between two different instances of an entity.

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Queries of a database are driven by SELECT commands.

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