JDBC ISERIES DRIVER

Conceptually, data of a ResultSet can be thought of as a table with a specific number of columns and a specific number of rows. Java exceptions The Java language uses exceptions to provide error-handling capabilities for its programs. Applications may also use DatabaseMetaData methods to obtain information about a data source, but this is less typical. Batch updates Batch update support allows any updates to the database to be passed as a single transaction between the user program and the database. To complete a logical unit of work, several actions may need to be taken against a database. An application program can have multiple connections at one time.

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However, getting the best possible performance requires that you build your applications in a way that takes advantage of the strengths the native JDBC driver has to offer.

Unlike some of the better-known interfaces of the JDBC specification, the RowSet specification is designed to be more of a framework than an actual implementation.

They are ideal for storing serialized Java iserise, Extensible Markup Language XML documents, and multimedia data such as songs, product pictures, employee photographs, and movie clips. These Connection objects can all connect to the same database or connect to different databases. Advanced data types Advanced SQL3 data types give you a tremendous amount of flexibility.

Configuring the IBM Toolbox for Java

To complete a logical unit of work, several actions may need to be taken against iseriew database. An application program can have multiple connections at one time.

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This procedure can significantly improve performance jdbbc many updates must be performed at once. JDBC transactions A transaction is a logical unit of work. It is through Connection objects that Statement objects are created for processing SQL statements against the database. Most are not specific to the native JDBC driver.

SQL statements cause the generation of ResultSet objects. The following tips are considered good JDBC programming practice. Batch updates Batch update support allows any updates to the database to be passed as a single transaction between the user program and the database. RowSet implementation providers have considerable freedom to jvbc the functionality that is needed to fit their needs in a specific problem space.

By default, the table rows are retrieved in sequence. Statement types The Statement interface and its PreparedStatement and CallableStatement subclasses are used to process structured query language SQL commands against the database. Conceptually, data of a ResultSet can be thought of as a table with a specific number of columns and a specific number of rows. Since many objects used in JDBC are expensive to create such as Connection, Statement, and ResultSet objects, significant performance benefits can iiseries achieved by reusing these objects instead of creating every time you need them.

ResultSets The ResultSet interface provides access to the results generated by running queries. The RowSet interfaces define a set of core functionality that all RowSets have. Within a row, column values can be accessed in any order.

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Accessing your IBM i database with the Java JDBC driver

This means that a single connection performs all the work of the transaction and that the connection can only work on one transaction at a time. Applications may also use DatabaseMetaData methods to obtain information about a data source, but this is less typical.

An exception is an event that occurs when you run your program that disrupts the normal flow of instructions. JDBC provides a natural and easy-to-use mapping from the Java programming language to the abstractions and concepts defined in the SQL standard.

This driver is also commonly known as the native JDBC driver. Iseriex is used primarily by application servers and tools to determine how to interact with a given data source.

Example: Using native JDBC and IBM Toolbox for Java JDBC concurrently

Java exceptions The Java language uses exceptions to provide error-handling capabilities for its programs. Database access from Iserries programs. These settings are used for all connections created by the native JDBC driver.

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