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CSC 350 - Final Exam questions with 100% correct answers
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CSC 350 - Final Exam questions with 100% correct answers
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CSC 350 - Final Exam questions with100% correct answers
In a file processing environment, descriptions for data and the logic for accessing the data are built into: -
correct answer ✔✔application programs
A collection of concepts used to describe the data, data constraints, and relationships among data is
called a(n): - correct answer ✔✔data model
The users who use application interfaces like forms and reports to extract and modify data from the
database are called: - correct answer ✔✔Naïve users
Redundancy wastes space because you are storing the same data in more than one place. - correct
answer ✔✔True
The DBMS reveals much of the database's internal complexity to the application programs and users. -
correct answer ✔✔False
Which of the following is an example of structured data: the data in _______? - correct answer ✔✔A
spreadsheet
Assume that two students are trying to register for a course in which there is only one open seat. What
component of a database system prevents both students from being given that last seat? - correct
answer ✔✔The concurrency-control manager
All of the following are primary purposes of a database management system (DBMS) EXCEPT: - correct
answer ✔✔providing an integrated development environment
A user view (in the view data abstraction layer) is: - correct answer ✔✔a logical definition to present
some relevant portion of the database to the user as per their individual requirements
, Metadata typically describes all of the following EXCEPT: - correct answer ✔✔location on disk
An attribute (or attributes) that uniquely identifies each row in a relation is called a: - correct answer
✔✔Primary key
In the figure below, the primary key for "dependent" is which type of key? - correct answer
✔✔Composite
A foreign key must exist in both tables that have a logical relationship. - correct answer ✔✔False
An attribute in a relation of a database that serves as the primary key of another relation in the same
database is called a: - correct answer ✔✔foreign key
A ____ is any key that uniquely identifies each row. - correct answer ✔✔superkey
Which of the following values violates the atomic property of relation attributes? - correct answer
✔✔Sam Smith
The collection of tuples stored in a database at a particular instance of time is called the __________. -
correct answer ✔✔Database instance
The ____ operator within relational algebra takes a vertical subset of a table. - correct answer
✔✔PROJECT
In a relational database, a two-dimensional table of data is also called a: - correct answer ✔✔Relation
The ____ join operator within relational algebra links tables by pairing only the rows with common
values in their common attribute(s). - correct answer ✔✔natural
Rows in a table are also called ____. - correct answer ✔✔tuples
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