Which of the following is/are TRUE about DDL command?
Our data is stored in a table that is described by the schema, thus DDL commands deal with the schema.
With the DDL commands, any structural changes can be made to the table, including creation, deletion, and alteration.
Both A. and B.
None of the above
Correct Answer :
C. Both A. and B.
In the case of DDL commands:
a) Our data is stored in a table that is described by the schema, thus DDL commands deal with the schema.
b) With the DDL commands, any structural changes can be made to the table, including creation, deletion, and alteration.
Related Questions
To get a record from one table, which is not present in another table, we can use the clause
CONCAT
COPY
EXCEPT
ALTER
Using SQL SELECT RANDOM() function, one can return the random
Table
Database
Row
Column
What is TRUE about UPDATE in SQL VIEW?
Views that depend on a single table can be updated.
An update of a view created from more than one table will not be allowed by SQL.
There should be no NULL values in the fields of view.
All of the above
SQL indexes speed up the execution time of which statement(s)?
SELECT
WHERE
Both A and B
None of the above
In which clause does the BETWEEN operator is used?
IF
AS
WHERE
EXCEPT
C in CRUD Operator means
To add or insert data
To retrieve or fetch data
To update the data
To delete the data
What is meant by Partial Database Control?
Business rules are hidden.
Users or professionals can't have the full control over the database.
Both A and B
None of the above
Which of the following statement is TRUE about DISTINCT Clause?
It cannot ignore the NULL values
It can ignore the NULL values
Its query can return multiple values
None of the above
What does the following statement do?
Finds any values that start with a and ends with o
Finds any values whose first character is a and third character is o
Both A. and B.
None of the above
With which of the following statement(s) can the SQL sub queries be used?
SELECT
UPDATE
INSERT
All of the above
GROUP BY clause is placed before which clause in SQL?
HAVING
WHERE
ORDER BY
FROM
Which of the following is TRUE about Intrusion Detection System?
Intrusion Detection System is Network-based
Intrusion Detection System is Host-based
Both A) and B)
None of the above
Which of the following statement is correct?
Comparison Operator has higher precedence than Conjuction Operator.
Identity Operator has higher precedence than Multiplication Operator.
Both A and B
None of the above
SQL Operator can be,
Unary
Binary
Both A and B
None of the above
Select the correct constraint in SQL?
NOT NULL
CHECK
DEFAULT
All of the above
What does the DELETE Statement do?
A new table in SQL is created using this SQL statement.
By deleting the stored data, this SQL statement deletes the database.
Columns in the SQL database can be created, deleted, or modified with this SQL statement.
By executing this SQL statement, you remove the table and all the information that it contains, including the structure, views, permissions, and triggers.
Which of the following is TRUE about the type of SQL Injection attack?
Install malicious program
Export valuable data
Get user login detail
All of the above
In the relational database, in order to modify index, we need to use which command?
ALTER
MODIFY
UPDATE
ADD
In case of ____ data, recursive CTE is used?
Round
Hierarchal
Linear
None of the above
What is the full form of BLOB?
Binary Long Objects
Binary Least Objects
Binary Large Objects
Binary Large Orientation
Which of the following is TRUE about UNIQUE constraint?
In columns that are subject to the UNIQUE constraint, duplicate values are not allowed.
Unique values will always be present in the column containing the unique constraint.
A single table can have more than one unique constraint, since it can be applied to more than one column.
All of the above
Which of the following is TRUE about Information Rule in the 12 Codd's Rules?
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.
Null values are treated in database records according to this rule.
Database systems must update all views tables on a regular basis.
Databases contain a wide variety of information, and each row and column of each table must hold this information.
In SQL SELECT COUNT, one needs to specify the
Column Name
Row Name
Table Name
None of the above
To connect strings, which function is used
CONNECT
ADD
COMBINE
CONCAT
Which of the following statement is false?
There is no difference between a lower case and upper case keyword in SQL.
It is easier to read SQL queries when the keywords are in lowercase.
An SQL statement's syntax is determined by its text line.
One or more SQL statements can be placed on a single line of text.
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
Select the correct statement.
TRUNCATE TABLE is faster than DELETE TABLE statement.
TRUNCATE TABLE uses fewer resources than DELETE TABLE statement.
Both A) and B)
None of the above
A Primary Key is basically a
Row
Column
Table
Database
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
In SQL, which statement can help in changing the name of the table?
RENAME
ALTER
Both A) and B)
None of the above