When an XML Schema is generated from an Oracle database (DB), the Oracle DB datatypes are converted to XML Schema datatypes as listed in the table below.
Oracle Datatype |
XML Schema Datatype |
ROWID |
xs:ID |
CHAR |
xs:string |
NCHAR |
xs:string |
VARCHAR2 |
xs:string |
NVARCHAR2 |
xs:string |
CLOB |
xs:string |
NCLOB |
xs:string |
NUMBER (with check constraint applied)* |
xs:boolean |
NUMBER |
xs:decimal |
FLOAT |
xs:double |
DATE |
xs:dateTime |
INTERVAL YEAR TO MONTH |
xs:gYearMonth |
BLOB |
xs:base64Binary |
| * | If a check constraint is applied to a column of datatype NUMBER, and the check constraint checks for the values 0 or 1, then the NUMBER datatype for this column will be converted to an XML Schema datatype of xs:boolean. This mechanism is useful for generating an xs:boolean datatype in the generated XML Schema. |
