SQL stands for Structured Query Language. The following is used to maintain communication with a database. The following is considered as a standard language for relational database management systems. This review was done by the American National Standards Institute in ANSI. The statements of this standard language can be utilized to finish the works that involve things like updating data on a database and retrieving data from a database
2. Top SQL Interview Questions List
2021
SQL is a common language that stands for Structured Query
Language which is basically based on general English language
whereas MySQL is a database management system.
Structured Query Language is the main part of the relational
database, which can be utilized for gaining access to the Database
and also plays a major role in the management of the Database.
On the other hand, MySQL is a Relational Database Management
System like SQL Server, Informix, and others.
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3. Set 1 - SQL
Interview
Questions and
Answers
There are basically three subsets of SQL:
Data Definition Language or DDL, which lets
the candidate carry out different functions
and perform tasks on the Database is one of
the most important subsets of SQL. These
operations and functions include ALTER,
CREATE and DELETE.
Data Manipulating Language or DML lets the
candidates manipulate and gain access to
the data in the Database. The following is
really helpful for the candidate in inserting,
deleting and improving data from the
Database. The following also helps the
candidate to retrieve the data from the
Database.
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4. 2.What is meant by DBMS, and how can it be
classified?
DBMS is otherwise known as Database
Management System, which is a software
application that connects with the candidate
along with the applications. The following also
connects with the Database and applications
to acquire and examine the data in the
Database. The Database Management System
lets the candidate to connect with the
Database.
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5. 3.HOW ARE THE TABLE AND
FIELD DEFINED IN SQL?
When we use the term table, it is meant
that there is a cluster or cluster of data
in a proper and well-settled manner
which is arranged in the form of rows
and columns. One of such tables is
StudentInformation.
Basically, we can say that a field is
the number of columns in a table.
Some examples of the field are Stu Id,
Stu Name, and Stu Marks
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6. 4. IN SQL, WHAT IS MEANT BY
JOINS?
In SQL, we generally use JOIN clause to conjunct row from
two tables or at times more than that. The following
conjunction is based on a related column between the
following. The following can also be utilized to amalgamate
two tables. This can also be utilized for acquiring
information from there. SQL comprises of 4 different kinds
of joins. They are Inner Join, Right Join, Left Join and Full
Join.
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7. 5. HOW CAN WE DISTINGUISH
BETWEEN CHAR AND VARCHAR 2
DATA TYPE IN SQL?
C H A R A S W E L L A S V A R C H A R 2 A R E
B O T H U S E D F O R T H E C H A R A C T E R S D A T A
T Y P E . B U T , T H E R E L I E S A D I F F E R E N C E .
W E C A N S A Y T H A T V A R C H A R 2 I S
B A S I C A L L Y U T I L I Z E D F O R C H A R A C T E R
S T R I N G S O F D I F F E R E N T L E N G T H S . O N
T H E O T H E R H A N D , C H A R I S U S E D F O R
S T R I N G S H A V I N G T H E S A M E L E N G T H . W E
C A N B E T T E R U N D E R S T A N D T H E
F O L L O W I N G B Y I L L U S T R A T I O N S .
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