JDBC ISERIES DRIVER
SQL statements cause the generation of ResultSet objects. Database access from Java programs. Java exceptions The Java language uses exceptions to provide error-handling capabilities for its programs. 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. This procedure can significantly improve performance when many updates must be performed at once. The RowSet interfaces define a set of core functionality that all RowSets have.
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These Connection objects can all connect to the same database or connect to different databases. SQL statements cause the generation of ResultSet objects. ResultSets The ResultSet interface provides access to the results generated by running queries. Applications may also use DatabaseMetaData methods to obtain information about a data source, but this is less typical.
Conceptually, data of a ResultSet can be thought of as a table with a specific number of columns and a specific number of rows. 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.
JDBC provides a natural and easy-to-use mapping from the Java programming language to the abstractions and concepts defined in the SQL standard. It is through Connection objects that Statement objects are created for processing SQL statements against the database. 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.
Advanced data types Advanced SQL3 data types give you a tremendous amount of flexibility.
IBM Using a JDBC Connector to connect to DB2 on iSeries (AS) – United States
Java exceptions The Iseriss language uses exceptions to provide error-handling capabilities for its programs. 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. 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 jddbc instead of creating every time you need them.
The RowSet interfaces define a set of core functionality that all RowSets have. To complete a logical unit of work, several actions may need to be taken against a database.
Example: Using native JDBC and IBM Toolbox for Java JDBC concurrently
Most are not specific to the native JDBC driver. An exception is an event that occurs when you run your program that disrupts the normal flow of instructions. JDBC transactions A transaction is a logical unit of work. It is used primarily by application servers and tools to determine how to interact with a given data source. Statement types Jdbd Statement interface and its PreparedStatement and CallableStatement subclasses are used to process structured query language SQL commands against the database.
An application program can have multiple connections at one time. The following tips are considered good JDBC programming practice.
This procedure can significantly improve performance when many updates must be performed at once. This means that a single connection performs all the work of the transaction and that the connection can only work on one iseeies at a time.
By default, the table rows are retrieved in sequence. Within a row, column values can be accessed in any order.
These settings are used for all connections created by the native JDBC driver. RowSet implementation providers have considerable freedom to define the functionality that is needed to fit their needs in a specific problem space. Database access from Java programs. 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. This driver is also commonly known as the native JDBC driver.