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Q:

 Which of the following is the original purpose of SQL?

A) To specify the syntax and semantics of SQL data definition language B) To specify the syntax and semantics of SQL manipulation language
C) To define the data structures D) All of the above.
 
Answer & Explanation Answer: D) All of the above.

Explanation:

SQL is a domain-specific language used in programming and designed for managing data held in a relational database management system, or for stream processing in a relational data stream management system.

 

Purpose of SQL are ::

* To define the data structures

* To specify the syntax and semantics of SQL manipulation language

* To specify the syntax and semantics of SQL data definition language

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Filed Under: Database
Job Role: Analyst , Database Administration , IT Trainer

30 24840
Q:

Where does Friday come before Thursday?

Answer

In the dictionary, we get Friday before Thursday. Since, in the dictionary all the words are in alphabetical order, and according to it F comes first than T.

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Subject: Logic Puzzles Exam Prep: AIEEE , Bank Exams , GRE , TOEFL
Job Role: Analyst , Bank Clerk , Bank PO

151 24780
Q:

Explain Belady's Anomaly?

Answer

Also called FIFO anomaly. Usually, on increasing the number of frames allocated to a process virtual memory, the process execution is faster, because fewer page faults occur. Sometimes, the reverse happens, i.e., the execution time increases even when more frames are allocated to the process. This is Belady's Anomaly. This is true for certain page reference patterns.

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Subject: Operating Systems

59 24764
Q:

Storage which stores or retains data after power off is called____

A) Volatile storage B) Non-volatile storage
C) Sequential storage D) Direct storage
 
Answer & Explanation Answer: B) Non-volatile storage

Explanation:
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Filed Under: Computer

73 24745
Q:

January 1 is observed as

A) Global family day B) World red cross day
C) World telecommunication day D) Common wealth day
 
Answer & Explanation Answer: A) Global family day

Explanation:
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Filed Under: Important Days and Years

78 24736
Q:

Who is known as the father of Pentium Chip?

 

A) Vinod Krishnan B) Seymour I. Rubinstein
C) Sanjay Mokashi D) Vinod Dham
 
Answer & Explanation Answer: D) Vinod Dham

Explanation:
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Filed Under: Famous Personalities
Exam Prep: Bank Exams

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Q:

A number of cats got together and decided to kill between them 999919 rats. Every cat killed an equal number of rats. Each cat killed more rats than there were cats. How many rats do you think that each cat killed ?

A) 1009 B) 991
C) 2000 D) 1000
 
Answer & Explanation Answer: A) 1009

Explanation:

Given total number of rats = 999919

 

999919 = 1000000 - 81 = 10002 - 92 = (1000+9)(1000-9) = 1009 x 991.
Since there were more rats than there were cats, 991 cats killed 1009 rats each.

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Filed Under: Math Puzzles
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

55 24716
Q:

What characteristic of read-only memory (ROM ) makes it useful?

A) ROM informationcan be easily updated B) Data in ROM is non volatile, that is, it remains there even without electrical power
C) ROM provides very large amounts of inexpensive data storage D) ROM chips are easily swapped between different brands of computers
 
Answer & Explanation Answer: B) Data in ROM is non volatile, that is, it remains there even without electrical power

Explanation:
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Filed Under: Computer

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