22) Which of the following is the correct to register a JdbcOdbcDriver? Explanation: By creating an object to the driver class of the driver software, we can register the driver. To register the JdbcOdbcDriver of the sun microsystems, we can create an object to the driver class JdbcOdbcDriver, as follows: sun.
When you load a driver class with Class. forName() , that driver registers itself with the driver manager. You can do this with as many drivers as you want.
How to get the object of DatabaseMetaData: The getMetaData() method of Connection interface returns the object of DatabaseMetaData. Syntax: public DatabaseMetaData getMetaData()throws SQLException.
Q 5 - Which of the following is correct about PreparedStatement? A - PreparedStatement allows mapping different requests with same prepared statement but different arguments to execute the same execution plan.
The steps for connecting to a database with JDBC are as follows:Install or locate the database you want to access.Include the JDBC library.Ensure the JDBC driver you need is on your classpath.Use the JDBC library to obtain a connection to the database.Use the connection to issue SQL commands.More items...•
Connection mysqlCon = DriverManager. getConnection(mysqlUrl, "root", "password"); To connect to multiple databases in a single JDBC program you need to connect to the two (or more) databases simultaneously using the above steps.
From a programmer's point of view, database metadata refers to data about database data or, more elaborately, the information about tables, views, column types, column names, result sets, stored procedures, and databases. Java's JDBC metadata API provides the means to retrieve that information through Java code.
You can get information about the database such as name of the database, version, driver name, user name and, url etc… by invoking the methods of the DatabaseMetaData interface using the obtained object.
The addBatch() method of Statement, PreparedStatement, and CallableStatement is used to add individual statements to the batch. The executeBatch() is used to start the execution of all the statements grouped together.
JDBCJava 8MySQL. The PreparedStatement interface extends the Statement interface it represents a precompiled SQL statement which can be executed multiple times. This accepts parameterized SQL quires and you can pass 0 or more parameters to this query.
A PreparedStatement is a pre-compiled SQL statement. It is a subinterface of Statement. Prepared Statement objects have some useful additional features than Statement objects. Instead of hard coding queries, PreparedStatement object provides a feature to execute a parameterized query.
Q 24 - Which of the following is correct about RowSet? A - A JDBC RowSet object holds tabular data in a way that makes it more flexible and easier to use than a result set.
C. resultSet.getString (1) returns the firstName field in the result set.
A. You may load multiple JDBC drivers in a program.