Data Type Classes

DB Interface Module Reference Guide
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2.3 Data Type Classes

The DB Interface Module normalizes data types between applications and vendor databases. In the process, it uses several kinds of data types:

the primitive C++ data types
a set of data types from the Essential Tools Module, including RWCString, RWWString, RWBasicUString, RWDate, RWDateTime, RWDecimalPortable, and RWTime.
the data types it defines

The data types defined by the DB Interface Module are listed and described in Table 2. See Chapter 7 in the DB Interface Module User's Guide for more information on the data model of the DB Interface Module.

Table 2: The Data Type Classes

Class Name	Description
*RWDBMBString*	Stores a multibyte string
*RWDBBlob*	Stores Binary Large Objects
*RWDateTime* *RWDBDateTime* (deprecated)	Stores a date and time value. For more information, see Section 7.4.2 in the DB Interface Module User's Guide and Section 7.4.3 in the DB Interface Module User's Guide NOTE: RWDBDateTime is deprecated. Use RWDateTime.
*RWDBDuration*	Stores a time period
*RWDBNullIndicator*	Used to detect `NULL` values
*RWDBValue*	Normalizes database data types

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