What does the COMMIT Statement do?
The data specified in this table or view is reported in this SQL statement.
Changes made in the SQL database transaction are permanently saved using this SQL statement.
Specify the columns of the table in this SQL statement to return distinct values.
By running this SQL statement, the transaction will be undone and the operations not yet saved to the SQL database will be undone.
Correct Answer :
B. Changes made in the SQL database transaction are permanently saved using this SQL statement.
Changes made in the SQL database transaction are permanently saved using COMMIT SQL statement.
Related Questions
What is the functionality of UCASE function?
To change the case of the string to lowercase characters.
To change the case of the string to uppercase characters.
To change the case of the string to numeric characters.
To change the case of the string to symbolic characters.
In order to update one table using another table and join condition, which statement is used.
SQL UPDATE INTO
SQL UPDATE JOIN
SQL JOIN
SQL JOIN UPDATE
Description allows the Script to load the
Owner of the script
Script name
Script Editor
All of the above
Bit is an integer that can be
0
1
Null
All of the above
At which of the following stage does SQL Injection occurs?
When the user is asked to logout
When the user is asked to input password
When the user is asked to input captcha
When the user is asked to input username
Following the completion of a transaction, it must be executed to save all the operations performed in the transaction. Here we are talking about which command?
REVOKE
COMMIT
ROLLBACK
SAVE
What does the UPDATE Statement do?
By deleting the stored data, this SQL statement deletes the database.
A new table in SQL is created using this SQL statement.
The stored data in the SQL database is changed or modified by this SQL statement.
Columns in the SQL database can be created, deleted, or modified with this SQL statement.
To get a record from one table, which is not present in another table, we can use the clause
CONCAT
COPY
EXCEPT
ALTER
Which of the following clause cannot be used in SQL sub queries?
GROUP BY
ORDER BY
DELETE
FROM
Which of these are the types of operators?
Arithmetic
Comparison
Set
All of the above
In how many parts are the SQL functions are divided into?
1
2
3
4
Which of the following statement is TRUE about DISTINCT Clause?
Returns only Distinct values.
Only on the single column, it operates.
It can be used with the aggregates such as COUNT, AVG, etc.
All of the above
Unique Index is similar to
Primary Key
Foreign Key
Composite Key
Alternate Key
In case of ____Rule, the primary key value, table name, and column name are characteristics that allow us to access the precise data (atomic value) logically from a relational database.
Systematic Treatment of Null Values
Guaranteed Access
View Updating
Physical Data Independence
A Primary Key is basically a
Row
Column
Table
Database
In DBMS, table is known as _____ and row is known as _____.
Relation, Tuple
Tuple, Tuple
Tuple, Relation
Relation, Relation
Which of the following is not MySQL String Data Type?
TEXT(Size)
TINYTEXT
MEDIUMTEXT
LARGETEXT
In order to remove an index, we need to use which command?
REMOVE
DELETE
DROP
DEL
In the case of ____ Independence Rule, if using the SQL queries language to insert data into table's cells, the database must maintain integrity independence.
Interdependent
Intradependent
Integration
Integrity
Select the correct statement.
With the DDL commands, any structural changes can be made to the table, including creation, deletion, and alteration.
With the DML commands, any structural changes can be made to the table, including creation, deletion, and alteration.
With the DCL commands, any structural changes can be made to the table, including creation, deletion, and alteration.
With the TCL commands, any structural changes can be made to the table, including creation, deletion, and alteration.
What is the difference between UNION & UNION ALL operators?
Combining the results of two select statements will be done using UNION whereas combined records from both queries are returned by UNION ALL operator.
Combining the results of two select statements will be done using UNION ALL whereas combined records from both queries are returned by UNION operator.
After performing the UNION operation, duplicate rows will not be removed whereas after performing the UNION ALL operation, duplicate rows will be removed.
None of the above
Which statement is used to select the database in SQL?
SELECT
USE
ALTER
CREATE
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
Using the SQL first() function, one can return the ____ value of the selected column.
First
Second
Third
Last
From the set of results, in order to remove the duplicate columns, ____ Clause is used.
DUPLICATE
DISTINCT
REMOVE
DROP
How MySQL determines which one to use, FLOAT or DOUBLE, using the p parameter?
If p comes between 0 to 25, data type becomes FLOAT(). If p comes between 26 to 54, data type becomes DOUBLE().
If p comes between 26 to 54, data type becomes FLOAT(). If p comes between 0 to 25, data type becomes DOUBLE().
If p comes between 25 to 53, data type becomes FLOAT(). If p comes between 0 to 24, data type becomes DOUBLE().
If p comes between 0 to 24, data type becomes FLOAT(). If p comes between 25 to 53, data type becomes DOUBLE().
Select the correct method of Web SQL?
Execute SQL
Transaction
Open Database
All of the above
In order to execute a query in Web SQL, which function is used?
open()
translate()
transaction()
execute()
What is the difference between Column Level and Table Level Constraints?
Constraints are applied to a single row using Column Level Constraints whereas Multiple rows can be constrained using a Table Level Constraint.
Constraints are applied to multiple rows using Column Level Constraints whereas a single row can be constrained using a Table Level Constraint.
Constraints are applied to a single column using Column Level Constraints whereas Multiple columns can be constrained using a Table Level Constraint.
Constraints are applied to multiple columns using Column Level Constraints whereas only a single column can be constrained using a Table Level Constraint.
Which of the following is supported in Comprehensive Data SubLanguage Rule in the 12 Codd's Rules?
Data Definition
View Definition
Data Manipulation
All of the above