What does BOOL mean in MySQL Numeric Data Types?
A Boolean value is specified by this variable. When a value is nonzero, it is considered false, and zero is considered true.
A Boolean value is specified by this variable. When a value is nonzero, it is considered true, and zero is considered false.
A Boolean value is specified by this variable. When a value is nonzero, it is considered true, and zero is also considered true.
A Boolean value is specified by this variable. When a value is nonzero, it is considered false, and zero is also considered false.
Correct Answer :
B. A Boolean value is specified by this variable. When a value is nonzero, it is considered true, and zero is considered false.
A Boolean value is specified by this variable. When a value is nonzero, it is considered true, and zero is considered false.
Related Questions
All other columns other than the column which is termed as Primary Key, are known as
Unique Keys
Alternate Keys
Composite Keys
None of the above
Which of the following is/are transaction control commands in SQL?
Commit
Rollback
Both A. and B.
None of the above
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
How many temp tables are there?
1
2
3
4
Which of the following is NOT the SQL Arithmetic Operator?
Addition
Subtraction
Unary
Modulus
By constraining a SQL statement, we limit the ____ according to certain conditions or restrictions.
Row
Column
Table
Database
SQL indexes speed up the execution time of which statement(s)?
SELECT
WHERE
Both A and B
None of the above
Which of the following is among the 12 Codd's Rules?
View Updating Rule
Relational Level Operation Rule
Distribution Independence Rule
None of the above
Which one of the syntaxes given below is of Binary Operator?
Operator SQL _Operand
Operand2 SQL _Operator Operand1
Operand1 SQL _Operator Operand1
Operand1 SQL _Operator Operand2
What is the difference between VARCHAR and VARCHAR2?
VARCHAR can store upto 4000 bytes and VARCHAR2 can store upto 8000 bytes.
VARCHAR can store upto 2000 bytes and VARCHAR2 can store upto 4000 bytes.
Both VARCHAR and VARCHAR2 are similar but use of VARCHAR2 is mostly recommended.
There is no similarity between VARCHAR and VARCHAR2.
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.
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.
To get a record from one table, which is not present in another table, we can use the clause
CONCAT
COPY
EXCEPT
ALTER
Commands that come under TCL is/are -
COMMIT
ROLLBACK
SAVEPOINT
All of the above
Combining the results of ___ select statements will be done using UNION.
One
Two
Three
Four
In CRUD Operator, U is an acronym of
Upper
Unique
Update
Uppercase
Temporary variables use ____ resources than table variables.
More
Less
Equal
None of the above
When SELECT statements used to create Views contain ____ clauses, the views cannot be updated.
JOIN
HAVING
GROUP BY
All of the above
What does COUNT() function returns?
Average value
Largest value
Smallest value
Number of rows
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
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().
____ function extract characters from the text field.
LEN()
NOW()
MID()
FORMAT()
In order to prevent multiple records from being returned by the sub query, ____ must be used before the sub query.
Many Value Operators
Multiple Value Operators
Single Value Operator
Unique Value Operator
In case the CTE is wrong, it goes into
Infinite Loop
Null State
False State
True State
Scripts ____ from various workspaces can be imported through import.
Exported
Imported
Changed
Saved
The ____ operator cannot be used with the sub query, but within it.
IN
INTO
BETWEEN
JOIN
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
For one table, there can be ____unique key constraint(s).
1
NULL
Many
None of the above
Which of the following statement is TRUE?
Web API is the part of HTML5
Web API is not the part of HTML5
Web API is the part of HTML
Web API is the part of XHTML
Which statement is used to select the database in Oracle?
USE
SELECT
RENAME
None of the above