Test Your Programming Skills with Safcode!

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Here is all important interview / exams questions.
Student doing practice apptitude test on safcode platform.
Instruction: "Total Number of Questions: 20
Each question carry 10 mark , no negative marking"

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Quiz Start

1. which of the following commands is used view the default installed database? VIEW DATABASE
DISPLAY DATABASE
SELECT DATABASE
SHOW DATABASE

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2. Character? limit to create database name in mysql? 44
40
54
64

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3. A view is nothing but a ________ table. Real
Static
Dynamic
Virtual

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4. Which of the following command is used to select a particular database? Select
Display
Show
USE

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5. A good example of a distributed application is ____________. Twitter
Computer application
System application
Collaboration application

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6. Which of the following function returns the number of unique values in a column? COUNT(DISTINCT)
COUNT(expression)
sUM()
COUNT(*)

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7. A__________ is used to group related files that together store a database object Data Sheet
Data file
MetaData
Filegroup

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8. Which of the following command is used to get current date/time? select curdate();
select curtime();
All of Them
select currenttime();

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9. ________________ is the capability of a system, network, or process to manage a growing amount of work, or its ability to enlarge so as to adapt to that growth Scalability
CPU Utilization
Performance optimization
Performance

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10. What is a candidate key? Used to uniquely identify a Tuple
Alias for foreign key
Used to identify a column
None of Them

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11. Which is the default order of sort in ORDER BY clause? Both Ascending and Descending
Descending
Not in Order by Default
Ascending

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12. Microsoft SQL Server data base engine provides a relational__________ named as Azure SQL Database. All of them
Infrastructure as a service (IAAS)
Database-As-A Service (DBaaS)
Platform as a Service (PaaS)

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13. A view is a __________ Table. Real
Virtual
Dynamic
Static

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14. Which MySQL statement is used to delete data from a database? EDIT
REMOVE
COLLAPSE
DELETE

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15. ______________ Command is used to remove rights or privileges from user accounts CANCEL
REMOVE
REVOKE
DELETE

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16. A_________ attribute may itself contain two or more attributes, which represent basic attribute having independent meanings of their own. Composite
Derived
multi-valued
Dependent

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17. How much storage space does DATETIME require? 2 bytes
1 byte
4 bytes
8 bytes

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18. Which of the following are types of synchronization? Asynchronous
None of them
Semisychronous
Both Asynchronous & Semisychronous

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19. Hot data means: Data which is not processed
Data in Database
Data being processed
Data not in use

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20. A systematic collection of data stored in a central location is known as? Excel
None of Them
Database
CSV

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