20694565
Descripción
Test por Rebecca Walton, actualizado hace más de 1 año
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Creado por Rebecca Walton
hace casi 5 años
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Pregunta 1
Pregunta
In MySQL, data in a database are often stored in one or more tables.
Respuesta
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true
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false
Pregunta 2
Pregunta
In MySQL, what is a table column called?
Respuesta
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a record
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an object
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a field
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a relation
Pregunta 3
Pregunta
Which of the following statements is correct?
Respuesta
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A database is used to create a DBMS
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A DBMS is used to create a database
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A DBMS is the same as a database
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A DBMS and a database are not related
Pregunta 4
Pregunta
MySQL is a database
Respuesta
-
true
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false
Pregunta 5
Pregunta
If the following connection is used in your PHP statement, what is the password for the account?
$conn = mysqli_connect('a', 'b', 'c');
Respuesta
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a
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b
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c
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no password
Pregunta 6
Pregunta
In MySQL, which of the following statement is used to create a database?
Respuesta
-
CREATE DATABASE schoolDB
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CREATE DATABASE
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CREATE schoolDB
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DATABASE schoolDB
Pregunta 7
Pregunta
In MySQL, suppose an SQL statement is stored in a variable called $query and the connection is stored in $conn, how do you execute the statement?
Respuesta
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mysqli_query($conn, $query);
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mysqli_query($query, $conn);
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mysqli_execute_query($conn, $query);
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mysqli_execute_query($query, $conn);
Pregunta 8
Pregunta
In MySQL, before executing an SQL CREATE TABLE statement, what must be done?
Respuesta
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You must know how many records are in the table
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You must know the data for the table
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You must select a foreign key
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You must select a database to add the table
Pregunta 9
Pregunta
What is the primary key of the a table?
Respuesta
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One or more fields that contain familiar values
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One or more fields that can uniquely identify each record
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One or more fields that have meanings to the end users
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One or more fields that are key to the success of the table
Pregunta 10
Pregunta
In MySQL, before you can execute any SQL statement, you must ____________ to the database.
Respuesta
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connect
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find a table
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use primary key of a table
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know how many tables are related
Pregunta 11
Pregunta
In SQL, what does the following statement do?
INSERT INTO abc (field1Name, field2Name) VALUES (field1Value, field2Value)
Respuesta
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Insert two rows into a database called abc
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Insert two rows into a table called abc
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Insert one row into a database called abc
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Insert one row into a table called abc
Pregunta 12
Pregunta
In SQL, what does the following statement do?
SELECT * FROM student;
Respuesta
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Select asterisk from a table called student
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Select asterisk from a database called student
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Select all rows and columns from a table called student
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Select all rows and columns from a database called student
Pregunta 13
Pregunta
In SQL, what does the following statement do?
UPDATE student SET studentGpa = 4.0 WHERE studentId = 4;
Respuesta
-
Set all students' GPA to 4.0
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Set the student's GPA to 4.0 whose student ID is 4 in the student table
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Set all student's GPA to 4.0 where possible
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Set the student's GPA to 4.0 whose student ID is 4 in the student database
Pregunta 14
Pregunta
In SQL, what does the following statement do?
DELETE FROM student;
Respuesta
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Delete one row in a database called abc
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Delete one row in a table called abc
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Delete all rows in a database called abc
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Delete all rows in a table called abc
Pregunta 15
Pregunta
In MySQL, after all the SQL statements are executed, you must ______ to the database.
Respuesta
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thank
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close the connection
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save the data
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exit
Pregunta 16
Pregunta
In PHP, why should you use mysqli_real_escape_string () function?
Respuesta
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You will get the real string from the HTML form
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The codes will run faster
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The codes will be more secure
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none of the above
Pregunta 17
Pregunta
In MySQL, if you add AUTO_INCREMENT attribute to a field of a table, ________________
Respuesta
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the table will automatically increase in size
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the field will automatically increase in size
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MySQL will automatically add a unique integer to the field when a new record is inserted
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MySQL will automatically add a new record to the table
Pregunta 18
Pregunta
Which of the following is NOT a data type in MySQL?
Respuesta
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BOOLEAN
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DECIMAL
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VARCHAR
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DATE
Pregunta 19
Pregunta
What is special about the following URL?
Contentupdate.php?id=2
Respuesta
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The browser requests a page called contentupdate.php which is second page
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The browser requests a page called contentupdate.php and the page id is 2
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The browser requests a page with the password of 2
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The browser requests a page called contentupdate.php and passes an id value of 2 that the contentupdate.php page usually needs
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