A Data Type Conversion

This appendix contains the following section:

Conversion of Atomic Data Types
Conversion of Non-Atomic Data Types
Conversion of Decimal Data Types
Conversion of Scaled Data Types

Conversion of Atomic Data Types

The gateway converts atomic data types in the advanced data dictionary (ADD) to Oracle data types as described in Table A-1.

Table A-1 Atomic Data Types

ADD Data Type	Oracle Data Type	Details
`apt_date`	`DATE`	Date packed into a 4-character string. Format: DMYY Example: 23-Jul-1998 is represented by four bytes: 19, 98, 7, and 23.
`apt_time`	`DATE`	ADD date-time format.
`bit`	`NUMBER(3)`	Single bit within a byte. Size: 1 byte. Format: `datatype="bit`" `onBit="n"` Where n specifies which bit (within a byte) the field uses. If more than one bit is defined, then the additional bits may be defined sequentially within the same byte (or bytes, if the number of bits requires this much space).
`bits`	`NUMBER(3)`	A signed number of bits within a byte. Size: 1 bit to 1 byte Format: `<field name="name" datatype="bits" onBit="n" size="m"/>` Where n specifies which bit (within a byte) to start from and m is the number of bits. If n is not specified then n defaults to 1 for the first occurrence of the field and is contiguous thereafter. The maximum number of bits you can map is 32.
`cstring`	`VARCHAR2`	A null-terminated string of alphanumeric characters; maximum length must be specified. An extra byte is required for the null flag.
`cv_datetime`	`DATE`	CorVision date-time format.
`date`	`DATE`	ODBC date format.
`date6`	`DATE`	Date in a string having the form YYMMDD
`date8`	`DATE`	Date in a string having the form YYYYMMDD
`dfloat`	`FLOAT(49)`	Double floating-point number (`D_FLOAT`) Size: 8 bytes Range: 0.29E-38 to 1.7E38 Precision: 16 digits.
`filler`	RAW	Allocation for future use, string type; length must be specified.
`fixed_cstring`	`FLOAT`(`49`)	A fixed null-terminated string of numeric characters; length must be specified. An extra byte is required for the null flag.
`int1`	`NUMBER(3)`	Signed byte integer. Size: 1 byte Range: -128 to +127
`int2`	`NUMBER(5)`	Signed word integer. Size: 1 byte Range: -32768 to +32767
`int3`	`NUMBER(10)`	Signed integer Size: 3 bytes
`int4`	`NUMBER(10)`	Signed long integer. Size: 4 bytes Range: -2147483648 to +2147483647
`int6`	`NUMBER(10)`	Signed integer Size: 6 bytes
`int_date`	`DATE`	Date in a four-byte integer having the form YYMMDD or YYYYMMDD. Example, 23-Jul-1998 has the form: 980723 or 19980723.
`jdate`	`DATE`	Julian date Size: 2 bytes Bits 0-6: (non-century) year Bits 7-15: day of the year
`logical`	`NUMBER`(10)	Signed long integer Values: 1 for `true`, 0 for `false`
`mvs_date`	DATE	z/OS date format.
`mvs_datetime`	`DATE`	z/OS date-time format.
`mvs_time`	`DATE`	z/OS time format.
`padded_str_date`	`DATE`	Padded date format, not null-terminated.
`padded_str_datetime`	`DATE`	Padded date format, not null-terminated.
`padded_str_time`	`DATE`	Padded date format, not null-terminated.
`phdate`	`DATE`	Size: 2 bytes Bits 0-6: (non-century) year Bits 7-10: number of month Bits 11-15: day of month
`single`	`FLOAT(23)`	Single floating-point number (F_FLOAT). Size: 4 bytes Range: 0.29E-38 to 1.7E38 Precision: 6 digits
`str_date`	`CHAR(10)`	Atomic date string Size: 10 characters Format: YYYY-MM-DD
`str_datetime`	`CHAR(19)`	Atomic date-time string. Size: 19 characters Format: YYYY-MM-DD HH:MM:SS
`str_time`	`CHAR(8)`	Atomic date string Size: 8 characters Format: HH:MM:SS
`string`	`CHAR`	String of alphanumeric characters; length must be specified.
`time`	`DATE`	ODBC time format.
`timestamp`	`DATE`	ODBC date-time format.
`ubits`	`NUMBE(3)`	An unsigned number of bits within a byte. Size: 1 bit to 1 byte Format: `<field name="name" datetype="bits" onBit="n" size="m"/>` Where n specifies which bit (within a byte) to start from and m is the number of bits. If n is not specified, then n defaults to1 for the first occurrence of the field and its contiguous thereafter. The maximum number of bits you can map is 31.
`uint1`	`NUMBER(3)`	Unsigned byte integer. Size: 1 byte Range: 0 to +254
`uint2`	`NUMBER(10)`	Unsugned word integer. Size: 2 bytes Range: 0 to+65534
`uint4`	`NUMBER(11)`	Signed long integer Size: 4 bytes Range: 0 to +4,294,967,294
`uint6`	`NUMBER`	Unsugned integer. Size: 6 bytes
`unicode`	`VARCHAR2`	A null-terminated alphanumeric unicode string. Maximum length must be specified.
`varstring`	`VARCHAR2`	16-bit count, followed by a string.
`varstring4`	`VARCHAR2`	32-bit count, followed by a string.

Conversion of Non-Atomic Data Types

The gateway converts atomic data types to Oracle data types as described in Table A-1.

Table A-2 Non-atomic Data Types

ADD Data Type	Oracle Data Type	Details
`binary`	`RAW`	Unknown data type, string type; length must be specified.
`nls_string`	`CHAR`	A string based on language and driven by table.

Conversion of Decimal Data Types

The gateway converts decimal data types to Oracle data types as described in Table A-3.

Table A-3 Decimal Data Types

ADD Data Type	Oracle Data Type	Details
`decimal`	`NUMBER`	Packed decimal Maximum number of digits: 31 Maximum fractions: 11 Length = int (number of digits/2) + 1 bytes
`numeric_cstring`	`NUMBER`	A null-terminated string of numeric characters; maximum length must be specified. An extra byte is required for the null flag.
`numstr_bdn`	`NUMBER`	Signed numeric string. Sign is the first character of the string. Maximum number of digits: 31 Maximum fractions: 11 Note: the number of fractions includes the decimal point.
`numstr_nlo`	`NUMBER`	Signed numeric string. A left overpunched sign is implemented. Maximum number of digits: 31 Maximum fractions: 11
`numstr_nl`	`NUMBER`	Signed numeric string. Sign is the first character of the string. Maximum number of digits: 31 Maximum fractions: 11
`numstr_nr`	`NUMBER`	Signed numeric string. Sign is the last character of the string. Maximum number of digits: 31 Maximum fractions: 11
`numstr_s`	`NUMBER`	Signed numeric string. A right overpunched sign is implemented. Maximum number of digits: 31 Maximum fractions: 11 The number must be right-justified (for example, " 1234N" is -12345). The number can be left-padded by either spaces or zeros. If a scale is provided, it is a fixed positional scale. No decimal point is provided in the data (for example, a value of "1234E" with scale 2 is interpreted as "123.45").
`numstr_u`	`NUMBER`	Unsigned numeric string. Maximum number of digits: 31 Maximum fractions: 11
`numstr_zoned`	`NUMBER`	Signed numeric string Maximum number of digits: 31 Maximum fractions: 11

Conversion of Scaled Data Types

The gateway converts scaled data types to Oracle data types as described in Table A-4.

Table A-4 Scaled Data Types

ADD Data Type	Oracle Data Type	Details
`scaled_int1`	`NUMBER`	Signed byte integer. Size: 1 byte Range: -128 to +127 Maximum: 3
`scaled_int2`	`NUMBER`	Singlwe word integer. Size: 2 byts Range: -32768 to +32767 Maximum: 5
`scaled_int3`	`NUMBER`	Signed integer. Size: 3 bytes
`scaled_int4`	`NUMBER`	Signed long integer. Size: 4 bytes Range: -2147483648 to +2147483647 Maximum: 10
`scaled_int6`	`NUMBER`	Signed integer Size: 6 bytes
`scaled_int8`	`NUMBER`	Signed quadword. Size: 4 bytes Range: -2147483648 to +2147483647 Maximum: 10
`scaled_uint1`	`NUMBER`	Unsigned byte integer. Size: 1 byte Range: 0 to +254 Maximum: 3
`scaled_uint2`	`NUMBER`	Unsigned word integer. Size: 2 bytes Range: 0 to +65534 Maximum: 5
`scaled_uint4`	`NUMBER(5)`	Unsigned long integer Size: 4 bytes Range: 0 to +4,294,967,294 Maximum: 10