August 2001
Intermediate to advanced
400 pages
9h 28m
English
Content preview from Java Programming with Oracle SQLJ
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Appendix A. Java and Oracle Type Mappings
This appendix documents the mappings between Java types used to create host variables and objects later used in SQLJ host expressions, and their compatible Oracle database types. When a column is retrieved from the database into a compatible Java host variable or object, the Oracle database type is converted to the corresponding Java type. For example, using the mappings defined in Table A-1, you can see that a host variable defined using a Java short, int, or long type may be used to store a value retrieved from a database NUMBER column. The reverse happens when you use a Java host variable or object to supply a value to a database column via a host expression; for example, you can use a Java short, int, or long host variable to supply a value to a database NUMBER column.
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