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JDBCTEST1
Ques 1 :
Which of the following allows non repeatable read in JDBC Connection?
(A) TRANSACTION_READ_COMMITTED
(B) TRANSACTION_READ_UNCOMMITTED
(C) TRANSACTION_REPEATABLE_READ
(D) TRANSACTION_SERIALIZABLE
Ques 2 :
Which of the following statements is true regarding the failing of the class.forName in jdk 1.1.x.
(A) A workaround is to explicitly call the method DriverManager.registerDriver(new YourDriverClass).
(B) The problem is due to race condition in the class loader.
(C) The race condition prevents the static section of code in the driver class from executing and registering the driver with the DriverManager.
(D) All the above.
Ques 3 :
How many JDBC driver types does Sun define?
(A) One
(B) Two
(C) Three
(D) Four
Ques 4 :
The JDBC-ODBC Bridge supports multiple concurrent open statements per connection?
(A) False
(B) True
Ques 5 :
Whatâ??s the difference between TYPE_SCROLL_INSENSITIVE , and TYPE_SCROLL_SENSITIVE?
(A) Both types of result sets will make changes visible if they are closed and then reopened.
(B) A result set that is TYPE_SCROLL_INSENSITIVE does not reflect changes made while it is still open and one that is TYPE_SCROLL_SENSITIVE does.
(C) You will get a scrollable ResultSet object if you specify one of these ResultSet constants.
(D) A result set that is TYPE_SCROLL_INSENSITIVE makes the result set read only while one that is TYPE_SCROLL_SENSITIVE does not.
Ques 6 :
Where is metadata stored in MySQL?
(A) In the MySQL database mysql
(B) In the MySQL database metadata
(C) In the MySQL database metasql
(D) In the MySQL database mysql
Ques 7 :
Which of the following statements is false as far as different type of statements is concern in JDBC?
(A) Regular Statement
(B) Interim Statement
(C) Callable Statement
(D) Prepared Statement
Ques 8 :
Which of the following is true regarding not finding the java.sql.DriverManager class.
(A) This problem can be caused by running a JDBC applet in a browser that supports the JDK 1.0.2, such as Netscape Navigator 3.0. The JDK 1.0.2 does not contain the JDBC API, so the DriverManager class typically isn't found by the Java virtual machine running
(B) Most of the browsers cannot download java.* because of security reasons. Hence many vendors of all-Java JDBC drivers supply versions of the java.sql.* classes that have been renamed to jdbc.sql.*, along with a version of their driver that uses these modify
(C) Add import jdbc.sql.* in your applet code instead of java.sql.*, and add the jdbc.sql.* classes provided by your JDBC driver vendor to your applet's codebase, then all of the JDBC classes needed by the applet can be downloaded by the browser at run time,
(D) All of the above
Ques 9 :
Which JDBC driver Type(s) can be used in either applet or servlet code?
(A) Both Type 1 and Type 3
(B) Both Type 1 and Type 2
(C) Both Type 3 and Type 4
(D) Type 4 only
Ques 10 :
Which of the following methods are needed for loading a database driver in JDBC?
(A) registerDriver() method
(B) Class.forName()
(C) Both A and B
(D) getConnection()
Ques 11 :
Which of the following statement is false regarding the use of setAutoCommit() in JDBC
(A) When a connection is created, it is in auto-commit mode.
(B) If the value is true each individual SQL statement is treated as a transaction and will be automatically committed right after it is executed.
(C) once auto-commit mode is disabled, no SQL statements will be committed until you call the method commit explicitly
(D) By default the JDBC call is in auto-commit mode.
Ques 12 :
________ is an open source DBMS product that runs on UNIX, Linux and Windows.
(A) JSP/SQL
(B) MySQL
(C) JDBC/SQL
(D) Sun ACCESS
Ques 13 :
Which of the following is false as far as type 4 driver is concern?
(A) Type 4 driver is "native protocol, pure java" driver
(B) Type 4 drivers can not be used with Netscape
(C) Type 4 drivers are 100% Java compatible
(D) Type 4 drivers uses Socket class to connect to the database
Ques 14 :
Which of the following is false regarding the Type 3 JDBC driver
(A) A Type 3 driver is a JDBC-Net pure Java driver
(B) This translates JDBC calls into a database -dependent net protocol.
(C) Vendors of database middleware products can implement this type of driver into their products to provide interoperability with the greatest number of database servers.
(D) a,b
Ques 15 :
What is sent to the user via HTTP, invoked using the HTTP protocol on the user's computer, and run on the user's computer as an application?
(A) A Java application
(B) A Java applet
(C) A Java servlet
(D) None of the above is correct.
Ques 16 :
To execute a stored procedure â??totalStockâ?? in a database server, which of the following code snippet is used?
(A) CallableStatement clbstmnt = con.prepareCall("{call totalStock}");cs.executeQuery();
(B) Statement stmt = connection.createStatement();stmt.execute("totalStock()");
(C) StoreProcedureStatement spstmt = connection.createStoreProcedure("totalStock()");spstmt.executeQuery();
(D) PrepareStatement pstmt = connection.prepareStatement("totalStock()");pstmt.execute();
Ques 17 :
What MySQL property is used to create a surrogate key in MySQL?
(A) UNIQUE
(B) AUTO_INCREMENT
(C) SEQUENCE
(D) None of the above -- Surrogate keys are not implemented in MySQL.
Ques 18 :
State true or false :- ResultSet.CONCUR_UPDATABLE used with the result set is used to update the rows directly in the database.
(A) True
(B) False
Ques 19 :
Which driver is efficient and always preferable for using JDBC applications?
(A) Type-4
(B) Type-1
(C) Type-2
(D) Type-3
Ques 20 :
Which JDBC driver Type(s) can you use in a three-tier architecture and if the Web server and the DBMS are running on the same machine?
(A) Type 1 only
(B) Type 2 only
(C) Both Type 3 and Type 4
(D) All of Type 1, Type 2, Type 3 and Type 4
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