Get the details of the JDBC Quiz from this article. Applicants can take the JDBC MCQ Online Test through Online from this page. So, refer the below sections to know the Multiple Choice Questions included in the JDBC Quiz. Individuals can practice the JDBC MCQ Test for free of cost. From the below sections, check the instructions to take the exam and participate in it. By the end, the students will learn many points by practicing the JDBC MCQ Quiz.
JDBC Quiz Details
| Quiz Name | JDBC |
| Category | Technical Quiz |
| Number of Questions | 23 |
| Time | No Time Limit |
| Exam Type | MCQ (Multiple Choice Questions) |
Furthermore, the contenders have to practice the JDBC Quiz to make themselves perfect in that topic of the programming language. Also, the aspirants who are left with the shortage of time and even unable to find the appropriate JDBC MCQ Online Test Details can go down this article. Here we are providing you the complete knowledge regarding the JDBC topics as well as subtopics in a tabular format. Everyone should make your time valuable with this test. Hence, we furnish all the details not to waste your precious time.
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JDBC MCQ Quiz Instructions
Before going to the JDBC Online Test, know the following instructions and make use of them
- The total number of questions in the JDBC Quiz are 23 questions.
- No time limit is given for the online test.
- Also, there is only one mark given for any question.
- Also, every single minute is precious.
- Within the successful completion, click on Submit Test.
- Moreover, if you do not submit the test, the results are not visible for the attempted test.
- During the quiz process, contenders should not refresh the page.
JDBC Online Test
What does JDBC stand for?
a) Java Database Connectivity
b) Java Data Binding and Connection
c) JavaScript Database Control
d) JavaScript Data Binding and Connection
Answer: a) Java Database Connectivity
Explanation: JDBC stands for Java Database Connectivity, which is a standard Java API used to connect to and manage relational databases.
Which interface must be implemented to connect to a database using JDBC?
a) Connection
b) Statement
c) ResultSet
d) DriverManager
Answer: a) Connection
Explanation: To connect to a database using JDBC, you need to implement the Connection interface, which represents a connection to a specific database.
Which method of the DriverManager class is used to establish a connection to a database?
a) getConnection()
b) executeQuery()
c) executeUpdate()
d) getResultSet()
Answer: a) getConnection()
Explanation: The getConnection() method of the DriverManager class is used to establish a connection to a database.
What is the purpose of the Statement interface in JDBC?
a) To execute SQL statements
b) To retrieve data from a database
c) To manage transactions
d) To establish a connection to a database
Answer: a) To execute SQL statements
Explanation: The Statement interface in JDBC is used to execute SQL statements against a database, such as SELECT, INSERT, UPDATE, and DELETE statements.
Which type of ResultSet object is used to move forward and backward through a result set?
a) TYPE_FORWARD_ONLY
b) TYPE_SCROLL_INSENSITIVE
c) TYPE_SCROLL_SENSITIVE
d) TYPE_DEFAULT
Answer: b) TYPE_SCROLL_INSENSITIVE
Explanation: The TYPE_SCROLL_INSENSITIVE type of ResultSet object in JDBC allows you to move forward and backward through a result set, as well as move to a specific row.
What is the purpose of the PreparedStatement interface in JDBC?
a) To execute SQL statements
b) To retrieve data from a database
c) To manage transactions
d) To establish a connection to a database
Answer: a) To execute SQL statements
Explanation: The PreparedStatement interface in JDBC is used to execute SQL statements against a database, just like the Statement interface. However, PreparedStatement provides additional benefits such as improved performance and protection against SQL injection attacks.
Which method of the ResultSet interface is used to retrieve data from a result set?
a) next()
b) executeQuery()
c) executeUpdate()
d) getResultSet()
Answer: a) next()
Explanation: The next() method of the ResultSet interface in JDBC is used to move the cursor to the next row in a result set and retrieve the data for that row.
What is the purpose of the DatabaseMetaData interface in JDBC?
a) To provide metadata about a database
b) To provide metadata about a result set
c) To provide metadata about a statement
d) To provide metadata about a connection
Answer: a) To provide metadata about a database
Explanation: The DatabaseMetaData interface in JDBC is used to retrieve metadata about a database, such as its name, version, and supported features.
Which method of the ResultSetMetaData interface is used to retrieve the number of columns in a result set?
a) getColumnCount()
b) getColumnName()
c) getColumnTypeName()
d) getColumnDisplaySize()
Answer: a) getColumnCount()
Explanation: The getColumnCount() method of the ResultSetMetaData interface in JDBC is used to retrieve the number of columns in a result set.
Which method of the PreparedStatement interface is used to set values for the placeholders in a SQL statement?
a) setParameter()
b) setValues()
c) setInt()
d) setString()
Answer: d) setString()
Explanation: The setString() method of the PreparedStatement interface in JDBC is used to set a String value for a placeholder in a SQL statement. Other methods like setInt(), setBoolean(), and setDouble() can also be used to set values for other data types.
Which method of the Connection interface is used to commit a transaction?
a) beginTransaction()
b) commitTransaction()
c) rollbackTransaction()
d) setAutoCommit()
Answer: b) commitTransaction()
Explanation: The commitTransaction() method of the Connection interface in JDBC is used to commit a transaction to the database, making the changes permanent.
Which method of the ResultSetMetaData interface is used to retrieve the name of a column in a result set?
a) getColumnCount()
b) getColumnName()
c) getColumnTypeName()
d) getColumnDisplaySize()
Answer: b) getColumnName()
Explanation: The getColumnName() method of the ResultSetMetaData interface in JDBC is used to retrieve the name of a column in a result set.
Which method of the Statement interface is used to execute a batch of SQL statements?
a) executeBatch()
b) executeQuery()
c) executeUpdate()
d) getResultSet()
Answer: a) executeBatch()
Explanation: The executeBatch() method of the Statement interface in JDBC is used to execute a batch of SQL statements, which can improve performance when executing multiple statements.
Which method of the ResultSet interface is used to retrieve an integer value from a result set?
a) getInt()
b) getString()
c) getBoolean()
d) getDouble()
Answer: a) getInt()
Explanation: The getInt() method of the ResultSet interface in JDBC is used to retrieve an integer value from a result set.
Which method of the PreparedStatement interface is used to execute a SQL statement and return a ResultSet object?
a) execute()
b) executeQuery()
c) executeUpdate()
d) getResultSet()
Answer: b) executeQuery()
Explanation: The executeQuery() method of the PreparedStatement interface in JDBC is used to execute a SQL statement and return a ResultSet object containing the query results.
Which method of the ResultSet interface is used to check if there are more rows in a result set?
a) next()
b) first()
c) last()
d) previous()
Answer: a) next()
Explanation: The next() method of the ResultSet interface in JDBC is used to move to the next row in a result set and return true if there is another row, or false if there are no more rows.
Which method of the ResultSetMetaData interface is used to retrieve the data type of a column in a result set?
a) getColumnCount()
b) getColumnName()
c) getColumnTypeName()
d) getColumnDisplaySize()
Answer: c) getColumnTypeName()
Explanation: The getColumnTypeName() method of the ResultSetMetaData interface in JDBC is used to retrieve the data type name of a column in a result set, such as VARCHAR, INTEGER, or DATE.
Which method of the Connection interface is used to roll back a transaction?
a) beginTransaction()
b) commitTransaction()
c) rollbackTransaction()
d) setAutoCommit()
Answer: c) rollbackTransaction()
Explanation: The rollbackTransaction() method of the Connection interface in JDBC is used to roll back a transaction, undoing any changes made since the transaction began.
Which type of ResultSet object is used to update the underlying database?
a) TYPE_FORWARD_ONLY
b) TYPE_SCROLL_INSENSITIVE
c) TYPE_SCROLL_SENSITIVE
d) TYPE_UPDATABLE
Answer: d) TYPE_UPDATABLE
Explanation: The TYPE_UPDATABLE type of ResultSet object in JDBC allows you to update the underlying database by modifying the data in the result set.
Which method of the Statement interface is used to close a statement and release its resources?
a) close()
b) execute()
c) executeUpdate()
d) getResultSet()
Answer: a) close()
Explanation: The close() method of the Statement interface in JDBC is used to close a statement and release its resources, such as database connections and memory. It should be called after a statement has been executed and is no longer needed.
About JDBC
The JDBC technology is a specification that provides a complete set of interfaces that allows for portable access to an underlying database. Moreover, the JDBC library includes APIs for each of the jobs as below that commonly associated with the database usage.
- Making a connection to a database.
- And Creating SQL or MySQL statements.
- Executing SQL or MySQL queries in the database.
- Also, Viewing & Modifying the resulting records.
Fundamentally, the Java programming can be used to write different types of executables, such as
- Java Applications
- The Java Applets
- Also, Java Servlets
- Java ServerPages (JSPs)
- Enterprise JavaBeans (EJBs).
Benefits Of Practicing JDBC Quiz
Initially, you can learn the details about the technology by praticing the quiz. Moreover, there is an opportunity to take the test how many times you want. Also, you can revise the topics quickly. Accuracy while opting for the answer as well as the time management improves. Thus, build up your self-confidence levels. This JDBC MCQ Online Test test helps you to speed up with the time.
How To Check JDBC Programming Online Test Results
Candidates can check their result of the JDBC Online Test from the bottom of the quiz session. As soon as you submit the answers to the test questions, the results visible on your page. Hence, the analysis leads to the improvement of the performance in the next exams.
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