O LEVEL- IT TOOLS & BUSINESS SYSTEM
TRICKS TO CRACK FIRST PAPER:
M1-R4: IT TOOLS & BUSINESS SYSTEMS
SOME IMPORTANT TOPICS WHICH FREQUENTLY ASKED EVERY YEAR:--
Difference between follwings---
SPAM , VIRUS , MALWARE, INTERPRETER, COMPILER , IMPACT ,NON IMPACT PRINTER , RAM , ROM ,DDL , DML ,SYSTEM SOFWARE , APPLICATION SOFTWARE , PRIMARY KEY , FOREIGN KEY ,MICR , OCR , MULTROCESSING , MULTIPROGRAMMING , CACHE AND REGISTER MEMORY TEMPLATE AND WIZARD----
S.No.
System Software
Application Software
1.
System
software is used for operating computer hardware.
Application software is used by user to perform specific task.
2.
System
softwares are installed on the computer when operating system is installed.
Application softwares are installed according to user’s
requirements.
3.
In
general, the user does not interact with system software because it works in
the background.
In general, the user interacts with application sofwares.
4.
System
software can run independently. It provides platform for running application
softwares.
Application software can’t run independently. They can’t run
without the presence of system software.
5.
Some
examples of system softwares are compiler, assembler, debugger,
driver, etc.
Some examples of application softwares are word processor, web
browser, media player, etc.
Primary Key
Foreign key
Primary
key uniquely identify a record in the table.
Foreign
key is a field in the table that is primary key in another table.
Primary
key can’t accept null values.
Foreign
key can accept multiple null value.
By
default, Primary key is clustered index and data in the database table is
physically organized in the
Foreign
key do not automatically create an
index,
We can
have only one Primary key in a table.
We can
have more than one foreign key in a table.
MICR
OCR
1
Known as magnetic ink character
Known as optical character reader
2
This scanner can read the
characters Printed with magnetic ink.
These scanner can read the
standard printed character Printed with normal ink
3
It uses principal of magnetism for
It uses principal of optics
(light) for reading Characters.
4
It is mainly used in banking
industry for Reading and decoding of cheques / Drafts efficiently and
securely.
Used for efficient reading of high
volume of printed Data like letters, news paper materials etc.
if this article is helpful to you then please like and share ..thank you..
Difference between follwings---
SPAM , VIRUS , MALWARE, INTERPRETER, COMPILER , IMPACT ,NON IMPACT PRINTER , RAM , ROM ,DDL , DML ,SYSTEM SOFWARE , APPLICATION SOFTWARE , PRIMARY KEY , FOREIGN KEY ,MICR , OCR , MULTROCESSING , MULTIPROGRAMMING , CACHE AND REGISTER MEMORY TEMPLATE AND WIZARD----
if this article is helpful to you then please like and share ..thank you..
|
S.No.
|
System Software
|
Application Software
|
|
1.
|
System
software is used for operating computer hardware.
|
Application software is used by user to perform specific task.
|
|
2.
|
System
softwares are installed on the computer when operating system is installed.
|
Application softwares are installed according to user’s
requirements.
|
|
3.
|
In
general, the user does not interact with system software because it works in
the background.
|
In general, the user interacts with application sofwares.
|
|
4.
|
System
software can run independently. It provides platform for running application
softwares.
|
Application software can’t run independently. They can’t run
without the presence of system software.
|
|
5.
|
Some
examples of system softwares are compiler, assembler, debugger,
driver, etc.
|
Some examples of application softwares are word processor, web
browser, media player, etc.
|
|
Primary Key
|
Foreign key
|
|
Primary
key uniquely identify a record in the table.
|
Foreign
key is a field in the table that is primary key in another table.
|
|
Primary
key can’t accept null values.
|
Foreign
key can accept multiple null value.
|
|
By
default, Primary key is clustered index and data in the database table is
physically organized in the
Sequence
of clustered index.
|
Foreign
key do not automatically create an
index,
Clustered
or non-clustered. You can manually create an index on foreign key.
|
|
We can
have only one Primary key in a table.
|
We can
have more than one foreign key in a table.
|
|
MICR
|
OCR
|
|
|
1
|
Known as magnetic ink character
Recognition.
|
Known as optical character reader
|
|
2
|
This scanner can read the
characters Printed with magnetic ink.
|
These scanner can read the
standard printed character Printed with normal ink
|
|
3
|
It uses principal of magnetism for
Reading characters.
|
It uses principal of optics
(light) for reading Characters.
|
|
4
|
It is mainly used in banking
industry for Reading and decoding of cheques / Drafts efficiently and
securely.
|
Used for efficient reading of high
volume of printed Data like letters, news paper materials etc.
|
if this article is helpful to you then please like and share ..thank you..
Comments
Post a Comment