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Examen

COSC 3380 EXAM 3 QUESTIONS WITH 100% CORRECT ANSWERS
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7

marzo 2026

2025/2026

A+
COSC 3380 EXAM 3 QUESTIONS WITH 100% CORRECT ANSWERS .How many zeros can appear in a single row of a bitmap index? - ANSWERS-Exactly one .Refer to the following scenario: -A table occupies 1,000 blocks. -FlightNumber is the primary key. -An index on FlightNumber occupies 100 blocks. -The WHERE clause specifies "FlightNumber = 3988." What is the minimum number of blocks necessary to process the SELECT? - ANSWERS-2 .Sparse Index - ANSWERS-Index on either a uniq...
IszackBd
$11.99 Más información

Examen

COSC 3380 FINAL EXAM QUESTIONS WITH VERIFIED ANSWERS
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9

marzo 2026

2025/2026

A+
COSC 3380 FINAL EXAM QUESTIONS WITH VERIFIED ANSWERS .Informal Guidelines (Measure of DB Quality) - ANSWERS--Making sure that the semantics of the attributes is clear in the schema -Reducing the redundant information in tuples -Reducing the NULL values in tuples -Disallowing the possibility of generating spurious tuples .Normalization - ANSWERS--analyzing schemas based on their FDs and primary keys -achieves 'desirable' properties: (1) minimizing redundancy (2) mini...
IszackBd
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Examen

COSC 3380 FINAL EXAM QUESTIONS WITH 100% VERIFIED ANSWERS
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8

marzo 2026

2025/2026

A+
COSC 3380 FINAL EXAM QUESTIONS WITH 100% VERIFIED ANSWERS .An __________ is written in the log whenever an update is reversed during a rollback. - ANSWERS-undo .Whenever deadlock occurs, a cycle of dependent transactions always exists. - ANSWERS-True .With a hot backup, as a transaction executes against the primary database - ANSWERS-Log records are sent to the secondary database .Is the schedule T1:R(x), T2:W(x), T2: commit, T1: W(x), T1: commit, T3: R(x), T3: ...
IszackBd
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Examen

COSC 3380 Exam 4
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19

marzo 2025

2024/2025

A
The COSC 3380 Exam 4 assesses students' understanding of advanced database management concepts, including relational databases, SQL optimization, indexing, transactions, concurrency control, and database security. Topics may also cover NoSQL databases, data warehousing, and distributed database systems. The exam evaluates students' ability to design, implement, and manage databases efficiently while ensuring data integrity and security.
ThePlug
$14.49 Más información

Examen

COSC 3380 Exam 4 Questions with Correct Answers Latest Update 2025-2026 Graded A+
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10

marzo 2025

2024/2025

A+
COSC 3380 Exam 4 Questions with Correct Answers Latest Update Graded A+ How many SQL statements must be in one transaction? Exactly one At least one At least two - Answers At least one After a transaction commits, the transaction can be rolled back: Always Sometimes Never - Answers Never After a rollback, the database restarts a transaction: Always Sometimes Never - Answers Sometimes A transaction increases all employee salaries by 10%. Due to a system failure, increases for only h...
TutorJosh
$10.79 Más información

Examen

COSC 3380 Exam 3 Questions and Answers Already Passed
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14

marzo 2025

2024/2025

A+
COSC 3380 Exam 3 Questions and Answers Already Passed Reading one gigabyte takes about one second. - Answers Flash memory Used to store petabytes (millions of gigabytes) of user data in the cloud. - Answers Magnetic disk Upgrading from 16 to 32 gigabytes costs an extra $400 for an Apple laptop computer. - Answers Main memory Approximately how many sectors are required to store one megabyte of data? Always 8,000 Always 2,000 Either 250 or 2,000 - Answers Either 250 or 2000 The database a...
TutorJosh
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Examen

COSC 3380 Exam 2 Questions with Correct Answers Graded A+ Latest Update 2025
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9

marzo 2025

2024/2025

A+
COSC 3380 Exam 2 Questions with Correct Answers Graded A+ Latest Update 2025 Stored functions have no parameters - Answers False ID in Faculty is the PRIMARY KEY. Code in Department is the PRIMARY KEY If DepartmentView is a materialized view, against what tables is the query executed? - Answers DepartmentView Which statement correctly inserts Sales - Answers INSERT INTO Department VALUES(82, 'Sales', 6381) Feedback: the column names are omitted, so the values must be in the same or...
TutorJosh
$10.69 Más información

Examen

COSC 3380 Exam 1 Questions and Answers Latest Update 2025-2026
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11

marzo 2025

2024/2025

A+
COSC 3380 Exam 1 Questions and Answers Latest Update Identification of entities, relationships, and attributes precedes documentation - Answers Usually Maria purchases an airline ticket, but a serer failure causes the ticket to become unavailable before the transaction completes. The database must reverse any partial changes. What transaction behavior would describe this situation? - Answers Transaction processed completely or not at all Data in a relational database can violate relational ...
TutorJosh
$10.49 Más información