Which of the following is not Unary operation?


Options: Select B. Project C. Rename D. Union

Ans:– D ,






More Database Systems Related questions:


Which of the following is not a characteristic of a system
Options: operates for some purpose,    has homogeneous components,    has interacting components,    operates within a boundary

Ans:B ,B


Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current?
Options: 0.3 A,    0.2 A,    0.4 A,    0.6 A

Ans:B ,B


. Queries can be created in Access by
Options: a. Typing Queries in SQL View b. Drag and Drop fields on Query Builder c. Using Query Wizard d. All of the Above

Ans:– d,– d


Which part of the system allows the user to interact with the compiler? (a) Memory
Options: Translator,    Communications processor,    Interpreter,    None of the above

Ans:D ,D


The complexity of Bubble sort algorithm is
Options: a. O(n) b. O(log n) c. O(n2) d. O(n log n)  

Ans:c,c


What command is used to display your current working directory?
Options: path,    pwd,    prompt $p$g,    dir

Ans:B ,B


30. Ctrl + Z
Options: a. Undo the last Action b. Redo the last Action c. Add the new page d. Paste the contents from clipboard

Ans:–  A ,–  A


The ESD wrist strap is designed to protect PC Components or Service Technicians ?
Options: PC Components,    Service Technicians,    Both,    

Ans:C ,C


. What is the keyboard shortcut (button or buttons to be pressed) for creating a chart from the selected cells?
Options: a. F3 b. F5 c. F7 d. F11

Ans:– d,– d


. The date and time displays on
Options: a. Taskbar b. Status bar c. System tray d. Launch pad

Ans: c, c


A computer is a box full of electronic
Options: Switching devices,    Chips,    Circuits,    Registers

Ans:A ,A


CASE tools do not include which of the following features?
Options: Help to draw data models,    Help to generate code,    Help to manage people,    Create an information repository

Ans:C ,C


The complete picture of data stored in database is known as
Options: Record,    Schema,    System flowchart,    DBMS

Ans:B,(Banswer


The first computer made available for commercial use was
Options: Mark-I,    ENIAC,    EDSAC,    UNIVAC

Ans:D ,D


. The __________ is the software tool to store or access data.
Options: a. table b. DBMS c. query d. report

Ans:6 – b ,6 – b


What will be the output of the program ? #include<stdio.h> int main() { enum days {MON=-1, TUE, WED=6, THU, FRI, SAT}; printf("%d, %d, %d, %d, %d, %d\n", MON, TUE, WED, THU, FRI, SAT); return 0; }
Options: -1, 0, 1, 2, 3, 4,    -1, 2, 6, 3, 4, 5,    -1, 0, 6, 2, 3, 4,    -1, 0, 6, 7, 8, 9

Ans:D ,D


Which of the following is not currently a topic in computer science?
Options: Speech recognition,    Artificial intelligence,    Thermodynamics,    Multiprocessing

Ans:C ,C


A technique for displaying applications where complex 3-D geometric are required for the exteror shall of a product is called:
Options: solid modeling,    2-D modeling,    3-D modeling,    surface modeling

Ans:D ,D


If no multivalued attributes exist and no partial dependencies exist in a relation, then the relation is in what normal form?
Options: First normal form,    Second normal form,    Third normal form,    Fourth normal form

Ans:B ,B


You have linked SQL*Plus to an external text editor. To invoke the text editor for use within SQL*Plus, which command do you use?
Options: Open [FileName],    Show [FileName],    Alter [FileName],    Edit [FileName]

Ans:D ,D


How can you find rows that do not match some specified condition?
Options: EXISTS,    Double use of NOT EXISTS,    NOT EXISTS,    None of the above is correct.

Ans:B ,B


In a database table, the category of information is called ____________
Options: a. tuple b. field c. record d. All of above

Ans:dash; b,dash; b


A rectangle represents which of the following in an ERD?
Options: Attribute,    Entity,    Optional One,    Relationship

Ans:B ,B


In DOS, what key would you press to step through the Config.sys and Autoexec.bat?
Options: F1,    F3,    F5,    F8

Ans:D ,D


Which of the following is program group?
Options: a. Accessories b. Paint c. Word d. All of above

Ans:a,a


Sales persons and other employees of the company who spend much of their time away from their offices but keep in touch with their company's microcomputers or main frame computers over telephone lines are called
Options: field workers,    telecommuters,    teleprocessors,    company directors

Ans:B ,B


. Where a row and a column meet, what do you call that?
Options: a. A cell b. A block c. A box d. None of the above

Ans:– a,– a


. A computer can solve more than one kind of problem. This is related to which of the following characteristics?
Options: A) Accuracy B) Reliability C) Versatility D) Automatic

Ans:8-C,8-C


What is the number of separate protocol layers at the serial interface gateway specified by the X.25 standard?
Options: 4,    2,    6,    3

Ans:D ,D


What command is used to remove the directory?
Options: rdir,    remove,    rd,    rmdir

Ans:D ,D


. A/n _____ Device is any device that provides information, which is sent to the CPU

Options: A) Input B) Output C) CPU D) Memory

Ans:A,A


A temporary storage area, attached to the CPU, for I/O operations is a:
Options: chip,    buffer,    register,    core

Ans:B ,B


. The Search tool CANNOT be used on which major Access object?
Options: a. Forms b. Queries c. Reports d. Tables

Ans:2 – c ,2 – c


A processing unit that coordinates networks and data communication is known as
Options: Control unit,    Communications processor,    Register unit,    CPU

Ans:B ,B


A factor which would strongly influence a businessperson to adopt a computer is its:
Options: Accuracy,    Reliability,    Speed,    All of the above

Ans:D,D


What could cause a fixed disk error?
Options: No-CD installed,    Bad RAM,    Slow processor,    Incorrect CMOS settings

Ans:D ,D


How many bits are used in the data bus?
Options: 7,    8,    9,    16

Ans:B ,B


When the Q point moves along the load line, the voltage increases when the current
Options: Decreases,    Stays the same,    Increases,    Can be any of above

Ans:C ,C


A relationship should be specified how in the ODL?
Options: One direction starting with the first class,    One direction starting with the second class,    Neither direction.,    Both directions.

Ans:D ,D


. A kind of scanner MICR is the short form of
Options: A) Magnetic Ink Character Reader B) Magnetic Ink Code Reader C) Magnetic Ink Cases Reader D) None

Ans:A,A


. As compared to the secondary memory, the primary memory of a computer is

Options: A) Large B) Cheap C) Fast D) Slow

Ans:C,C


The primary method that people use to sense their environment is:
Options: reading,    writing,    speaking,    seeing

Ans:D ,D


. An organized collection of logically related data is known as 
Options: a. Data b. Meta data c. Database d. Information

Ans:– c,– c


Which disk interface standard includes support for up to eight peripheral devices?
Options: ST50G/412,    IDE,    SCSI,    ESDI

Ans:C ,C


Which item best describes a CAM technology?
Options: Numerical control,    Drafting,    Documentation,    Geometric modeling

Ans:A ,A


If you want your database to include methods, you should use a _____ database.
Options: Network,    Distributed,    Hierarchical,    Object-Oriented

Ans:D ,D


Who originally designed TCP/IP?
Options: The Department of Defense,    Novell,    IBM,    Xerox

Ans:A ,A


The command that can be used to restrict incoming messages to a user is
Options: mesg,    grep,    halt,    sleep

Ans:A ,A


. Referential integrity cannot be set for _______________ relationships.
Options: a. One-To-One b. Indeterminate c. One-To-Many d. Many-To-Many

Ans:9 – b ,9 – b


The space factor when determining the efficiency of algorithm is measured by
Options: a. Counting the maximum memory needed by the algorithm b. Counting the minimum memory needed by the algorithm c. Counting the average memory needed by the algorithm d. Counting the maximum disk space needed by the algorithm  

Ans:a,a

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