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ISERIES JDBC DRIVER

ResultSets The ResultSet interface provides access to the results generated by running queries. I added support for handling Null database values to the JDBCR4 service program, and described the new support in this article. Conceptually, data of a ResultSet can be thought of as a table with a specific number of columns and a specific number of rows. Sadly, the company who published these has taken them offline, so these links will not work. Even if you’re not able to attend one of my talks, you can download a PDF copy of my Powerpoint sldes used as a handout for attendees here:. Advanced data types Advanced SQL3 data types give you a tremendous amount of flexibility.

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While previous articles showed how to access database columns fields by number, this article adds support for retriving the column values by name instead. SQL statements cause the generation of ResultSet objects.

Isdries provides a natural and easy-to-use mapping from the Java programming language to the abstractions and concepts defined in the SQL standard. ResultSets The ResultSet interface provides access to the results generated by running queries. An application program can have multiple connections at one time.

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

By default, the table rows are retrieved in sequence. Advanced data types Advanced SQL3 data types give you a tremendous amount of flexibility. Support is provided through public forums and mailing lists. Since many objects used in JDBC are expensive to create such as Connection, Statement, and ResultSet objects, significant performance benefits can be achieved by reusing these objects instead of creating every time you need them.

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The RowSet interfaces define a set of core functionality that all RowSets have. These settings are used for all connections created by the native JDBC driver. Applications may also use DatabaseMetaData methods to obtain information about a data source, but this is less typical. This article takes what I learned from the earlier articles and attempts to combine it all into one. Most are not specific to the native JDBC driver.

Database access from Java programs. They are ideal for storing serialized Java objects, Extensible Markup Language XML documents, and multimedia data such as songs, product pictures, employee photographs, and movie clips.

Sadly, the company who published these has taken them offline, so these links will not work. This was my original article on external database access, it was aimed at MySQL databases only. Conceptually, iserles of a ResultSet can be thought of as a table with a specific number of columns and a specific number of rows. It jddbc used primarily by application servers and tools to determine how to interact with a given data source. Within a row, column values can be accessed in any order.

These Connection objects can all connect to the same database or connect to different databases. 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.

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

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DB2 iSeries JDBC Drivers

This presentation aims to discuss:. This is a community-supported product. This procedure can significantly improve performance when many updates must be performed at once. To complete a logical unit of work, several actions may need to be taken against a database.

This article explains where to get the jTDS driver and the minor changes that iseriex need to make to Jon Juracich’s example to make it work with the jTDS driver. 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.

DB2 iSeries JDBC Drivers configuration

Even if you’re not able to attend one of my talks, you can download a PDF copy of my Powerpoint sldes used as a handout for attendees here:. All the same features as the previous article, but able to access any sort of database. JDBC transactions A transaction is a logical unit of work. I added support for handling Null database values to the JDBCR4 service program, and described the new support in this article. Statement types The Statement interface and its PreparedStatement and CallableStatement subclasses are used to process structured query language SQL commands against the database.