Quick Answer: Which Method Will Be Called For Execution Of DML Statements?

Which method in statement should be used to execute a DDL command?

The execute() method: This method is used to execute SQL DDL statements, it returns a boolean value specifying weather the ResultSet object can be retrieved..

Which is faster ODBC or JDBC?

JDBC drivers are implemented in Java. ODBC drivers are faster. JDBC drivers are slower than ODBC drivers.

What is difference between stored procedure and function?

The function must return a value but in Stored Procedure it is optional. Even a procedure can return zero or n values. Functions can have only input parameters for it whereas Procedures can have input or output parameters. Functions can be called from Procedure whereas Procedures cannot be called from a Function.

How do you automatically execute a stored procedure every day at a particular time?

You can use the administrative task scheduler to execute stored procedures at a specific time. You must first define a task for the stored procedure execution. Then, when the specified time or event occurs for the stored procedure to run, the administrative task scheduler calls the stored procedure.

What is the difference between executeQuery () and executeUpdate ()?

executeQuery method execute statements that returns a result set by fetching some data from the database. It executes only select statements. executeUpdate method execute sql statements that insert/update/delete data at the database.

What does JDBC stand for?

Java Database ConnectivityJDBC (Java Database Connectivity) is the Java API that manages connecting to a database, issuing queries and commands, and handling result sets obtained from the database. Released as part of JDK 1.1 in 1997, JDBC was one of the first components developed for the Java persistence layer.

What is the return type of executeUpdate ()?

The JDBC standard states that the executeUpdate method returns a row count or 0. … For an SQL statement that can have an update count, such as an INSERT, UPDATE, DELETE, or MERGE statement, the returned value is the number of affected rows.

What does executeUpdate return?

readline() into an INSERT statement and pass the result to the executeUpdate() method. The executeUpdate() method returns the number of rows affected by the SQL statement (an INSERT typically affects one row, but an UPDATE or DELETE statement can affect more).

Can you execute a stored procedure in a select statement?

Stored procedures are typically executed with an EXEC statement. However, you can execute a stored procedure implicitly from within a SELECT statement, provided that the stored procedure returns a result set.

What is SQL in Java?

SQL (Structured Query Language) is used to perform operations on the records stored in the database such as updating records, deleting records, creating and modifying tables, views, etc. SQL is just a query language; it is not a database.

Which method is used to execute select query *?

Commonly used methods of Statement interface: 1) public ResultSet executeQuery(String sql): is used to execute SELECT query. It returns the object of ResultSet. 2) public int executeUpdate(String sql): is used to execute specified query, it may be create, drop, insert, update, delete etc.

How can you execute a stored procedure in the database?

To execute a stored procedure Expand the database that you want, expand Programmability, and then expand Stored Procedures. Right-click the user-defined stored procedure that you want and click Execute Stored Procedure.

What does executeQuery return?

executeQuery : Returns one ResultSet object. executeUpdate : Returns an integer representing the number of rows affected by the SQL statement. Use this method if you are using INSERT , DELETE , or UPDATE SQL statements.

Why ResultSet is used in Java?

The SQL statements that read data from a database query, return the data in a result set. The SELECT statement is the standard way to select rows from a database and view them in a result set. The java. … A ResultSet object maintains a cursor that points to the current row in the result set.

What is JDBC example?

JDBC stands for Java Database Connectivity. JDBC is a Java API to connect and execute the query with the database. It is a part of JavaSE (Java Standard Edition). JDBC API uses JDBC drivers to connect with the database.

What is return type of execute () method?

Since this is a SELECT statement, the execute( ) method returns a boolean true to indicate that a result set is available. You can then call the Statement object’s getResultSet( ) method to retrieve the ResultSet object that contains the data from the database.

What is execute query in Java?

Statement execute(String query) is used to execute any SQL query and it returns TRUE if the result is an ResultSet such as running Select queries. The output is FALSE when there is no ResultSet object such as running Insert or Update queries.

How do you execute DML statements in JDBC?

Prepared Statements. The DML operations of INSERT and UPDATE—that is, the write operations—are done by means of the prepareStatement() method of the Connection object created above. A call to this method takes variable bind parameters as input parameters and creates an object instance of the PreparedStatement class.

Which method is preferred for executing DML queries?

We must prefer PreparedStatement, as it is suitable for executing DML commands – SELECT, INSERT, UPDATE and DELETE. So, in this tutorial we learned how to Execute INSERT query(DML command) using java. sql. Statement’s executeUpdate method in java.

What is executeUpdate in Java?

int executeUpdate(String SQL): Returns the number of rows affected by the execution of the SQL statement. … Use this method to execute SQL statements, for which you expect to get a number of rows affected – for example, an INSERT, UPDATE, or DELETE statement.

What are the 4 types of JDBC drivers?

Today, there are five types of JDBC drivers in use:Type 1: JDBC-ODBC bridge.Type 2: partial Java driver.Type 3: pure Java driver for database middleware.Type 4: pure Java driver for direct-to-database.Type 5: highly-functional drivers with superior performance.