Number of operands used by Unary Operator is?
1
2
3
4
Correct Answer :
A. 1
Number of operators used by Unary Operand is 1.
Related Questions
You can also ____ the existing tables by using the UNIQUE constraint.
Change
Delete
Modify
Drop
What is the functionality of SQL COUNT?
It returns the no of record of table
It returns the no of record of database
It returns the no of record of row
It returns the no of record of column
In the case of ____ Independence Rule, Physical independence of data to access the database is a requirement for a database or an application.
Physical Data
Logical Data
Integrity
Distribution
In the database table, data types describe the kind of ___ that it can contain.
Table
Data
Number
None of the above
Why index is important in SQL?
The large database can be searched quickly with SQL Indexes.
The concept below is a quick way to include different values in those columns.
A smaller table may not recognize the performance of an index when used with an index.
All of the above
What does SQL stand for?
SQL stands for Sample Query Language
SQL stands for Structured Query List
SQL stands for Structured Query Language
SQL stands for Sample Query List
What does UCASE() function do?
Converts database field to uppercase
Converts database field to lowercase
Returns the length of the text field
Returns the current date and time
Which of the following is the feature(s) of SQL Auto Increment?
In some cases you may not have any unique identifying characteristics in data; therefore, it makes sense to create a Primary Key.
Explicitly initializing and modifying the auto-increment value is possible at any time.
Record identifiers can easily be created that are unique to each record.
All of the above
In order to merge two or more strings, which string function is used?
CHAR
ALTER
CONCAT
MERGE
We can create View in SQL using
CREATE statement
CREATE VIEW statement
VIEW CREATE statement
SQL VIEW statement
SELECT INTO statement -
Select the content from a table.
Rename the content in a table.
Copy the content from one table into another existing table.
None of the above
Command that comes under DCL is/are -
GRANT
REVOKE
Both A. and B.
None of the above
What is the difference between DELETE and TRUNCATE statements?
DELETE statement free up the space kept in check by the table whereas TRUNCATE statement does not free up the space kept in check by the table.
DELETE statement does not free up the space kept in check by the table whereas TRUNCATE statement free up the space kept in check by the table.
DELETE statement only deletes rows from the table whereas TRUNCATE statement can only delete columns from the table.
DELETE statement only deletes columns from the table whereas TRUNCATE statement can only delete rows from the table.
What does the following statement do?
Finds any values that start with or
Finds any value that contains only four characters and second, third characters are 'o', 'r'
Finds any values that have or in any position
None of the above
Types of SQL Commands are
DDL
DML
DCL
All of the above
In SQL, Like is a ____ operator.
Relational
Logical
Additional
Unique
What is the work of UPDATE command?
A single or multiple rows can be accessed using this command from one or more tables of a database. Using the WHERE clause with this command is also possible.
Using this command, you can remove or erase recorded information from a database table.
Database data can be updated or changed using this command.
It enables you to create new databases, tables, table views, and other objects using this command.
What will be the output of the below SQL statement?
25
26
24
20
In order to convert the expression from one to another data type, which SQL Function is used?
CONVERT
CHANGE
CAST
TRANSIT
Which statement is used to select the database in SQL?
SELECT
USE
ALTER
CREATE
BETWEEN Operator returns the TRUE value if the column value is
<=Value1 & >=Value2
<=Value1 & <=Value2
>=Value1 & >=Value2
>=Value1 & <=Value2
What is the difference between HAVING and WHERE clause?
HAVING clause is used in column operation whereas WHERE clause is used in row operation.
HAVING clause is post-filter whereas WHERE clause is pre-filter.
HAVING clause filters the groups whereas WHERE clauses filter the single record of the table.
All of the above
Which statement is true about the No-SQL?
No-SQL follows ACID Model.
No-SQL does require object-relational mapping.
Dynamic schemas for unstructured data are used in No-SQL databases.
No-SQL databases are not preferable for storage of hierarchal data.
What does the INSERT INTO Statement do?
In this SQL statement, the data or records are inserted into an existing database table. One query statement can insert multiple records simultaneously using this statement.
A new database will be created through this SQL statement.
In the database management system, this SQL statement deletes the existing database, together with all the database tables and views.
By executing this SQL statement, all records in the SQL database will be deleted.
What does the ROLLBACK Statement do?
Specify the columns of the table in this SQL statement to return distinct values.
Changes made in the SQL database transaction are permanently saved using this SQL statement.
By running this SQL statement, the transaction will be undone and the operations not yet saved to the SQL database will be undone.
An index is created in a SQL database table with this SQL statement.
In case of ____ data, recursive CTE is used?
Round
Hierarchal
Linear
None of the above
In order to delete the database, which keyword is used?
DROP
DELETE
ALTER
None of the above
Which of the following is/are Scalar function(s)?
UCASE()
MID()
ROUND()
All of the above
In how many categories data types has been classified?
2
3
4
5
In how many parts are the SQL functions are divided into?
1
2
3
4