use-unique-table-names

false

Specifies that generated table names are unique within each application server domain. This property can be overridden during deployment. See Table 7–4.

bean-name.field-name.attribute

none 

Defines a column attribute. For attribute descriptions, see Table A–95.

jdbc-type

Specifies the JDBC type of the column created for the CMP field. The actual SQL type generated is based on this JDBC type but is database vendor specific. 

jdbc-maximum-length

Specifies the maximum number of characters stored in the column corresponding to the CMP field. Applies only when the actual SQL that is generated for the column requires a length. 

For example, a jdbc-maximum-length of 32 on a CMP String field such as firstName normally results in a column definition such as VARCHAR(32). But if the jdbc-type is CLOB and you are deploying on Oracle, the resulting column definition is CLOB. No length is given, because in an Oracle database, a CLOB has no length.

jdbc-precision

Specifies the maximum number of digits stored in a column which represents a numeric type. 

jdbc-scale

Specifies the number of digits stored to the right of the decimal point in a column that represents a floating point number. 

jdbc-nullable

Specifies whether the column generated for the CMP field allows null values.