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1D0-541 — Database Specialist
#Question
Which SQL function is best for aggregating total sales across various products?
A.
SUM
B.
TOTAL
C.
AVERAGE
D.
COUNT
Correct Answer:
A
The SUM function is used to aggregate and compute total sales values from a specified column in a SQL query.
#Question
What can cause performance degradation in a database system?
A.
High user concurrency
B.
Proper indexing
C.
External backups
D.
Flat database structure
Correct Answer:
A
High user concurrency can lead to performance issues if not managed correctly, such as resulting in locking and deadlocks.
#Question
A business needs to consolidate data from several regional offices for analysis. Which type of database would typically be used?
A.
Data warehouse
B.
Operational database
C.
NoSQL database
D.
Document database
Correct Answer:
A
A data warehouse is designed for consolidated data analysis from various sources to provide insights.
#Question
What is the purpose of using a check constraint in a database?
A.
To ensure that values meet specific criteria
B.
To join tables
C.
To enforce referential integrity
D.
To provide documentation
Correct Answer:
A
A check constraint defines rules that specific values in a column must adhere to, ensuring data validity.
#Question
When developing an application that interacts with a database, which design aspect is crucial for scalability?
A.
Hardcoding values
B.
Limited data types
C.
Flexible schema design
D.
Single-threaded operations
Correct Answer:
C
Flexible schema design allows adjustments and scaling as data requirements grow or change.
#Question
Which feature of a database allows the enforcement of business rules?
A.
Data archiving
B.
Indexes
C.
Data encryption
D.
Triggers
Correct Answer:
D
Triggers can automatically enforce business rules and constraints within the database, ensuring integrity.
#Question
What should a database administrator regularly perform to maintain database performance?
A.
Visual data reporting
B.
User training
C.
Routine database backups
D.
System audits
Correct Answer:
C
Regular database backups are essential for protecting data and ensuring availability in case of system failure.
1D0-541 — Database Specialist
#Question
Which SQL function is best for aggregating total sales across various products?
A.
SUM
B.
TOTAL
C.
AVERAGE
D.
COUNT
Correct Answer:
A
The SUM function is used to aggregate and compute total sales values from a specified column in a SQL query.
#Question
What can cause performance degradation in a database system?
A.
High user concurrency
B.
Proper indexing
C.
External backups
D.
Flat database structure
Correct Answer:
A
High user concurrency can lead to performance issues if not managed correctly, such as resulting in locking and deadlocks.
#Question
A business needs to consolidate data from several regional offices for analysis. Which type of database would typically be used?
A.
Data warehouse
B.
Operational database
C.
NoSQL database
D.
Document database
Correct Answer:
A
A data warehouse is designed for consolidated data analysis from various sources to provide insights.
#Question
What is the purpose of using a check constraint in a database?
A.
To ensure that values meet specific criteria
B.
To join tables
C.
To enforce referential integrity
D.
To provide documentation
Correct Answer:
A
A check constraint defines rules that specific values in a column must adhere to, ensuring data validity.
#Question
When developing an application that interacts with a database, which design aspect is crucial for scalability?
A.
Hardcoding values
B.
Limited data types
C.
Flexible schema design
D.
Single-threaded operations
Correct Answer:
C
Flexible schema design allows adjustments and scaling as data requirements grow or change.
#Question
Which feature of a database allows the enforcement of business rules?
A.
Data archiving
B.
Indexes
C.
Data encryption
D.
Triggers
Correct Answer:
D
Triggers can automatically enforce business rules and constraints within the database, ensuring integrity.
#Question
What should a database administrator regularly perform to maintain database performance?
A.
Visual data reporting
B.
User training
C.
Routine database backups
D.
System audits
Correct Answer:
C
Regular database backups are essential for protecting data and ensuring availability in case of system failure.
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