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J2EE™ Applications and BEA™ WebLogic Server™ by Sandra L. Emerson, Rob Woollen, Michael Girdley

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Advanced Features

This section covers some of the advanced features of JDBC:

  • Binary Large OBjects (BLOBs) and Character Large OBjects (CLOBs), which make moving large objects to and from the database faster and easier

  • Dates and times, which are used to handle timestamps and so forth

  • Batch updates, which are used to improve the efficiency of making many updates to the database at a single time

Let's look at each of these in detail.

BLOBs and CLOBs

BLOBs and CLOBs are SQL data types available for efficient storage and retrieval of large objects. BLOBs contain binary data while CLOBs contain only characters.

BLOB and CLOB data types are created to store and retrieve very large objects such as a user's pictures or very large text files. BLOBs and CLOBs ...

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