Data Conversion for Adabas or RDBMS

The conversion tables shown in this section list the Natural data formats and their corresponding data types in an Adabas database or in a relational database management system (RDBMS).

The generation of DDMs from an RDBMS requires the conversion from RDBMS-specific data types to Natural data formats. For general information on data access and data conversion, see the list of related documentation in Related Topics.

For information on using large and dynamic variables and/or fields, refer to the section DDM Generation and Editing for Varying Length Columns in the Statements documentation.

This section covers the following topics:

Adabas

Data Type Adabas Data Format Natural Data Format/Length
alphanumeric A (n) An
binary B (n) Bn
fixed

F (n)
but: F8

In
I4

float G (n) Fn
packed P (n) P (2 * n - 1)
unpacked U (n) Nn
wide character (Unicode) W (n) U (n/2 rounded down)

Adabas D

RDBMS Data Type Natural Data Format/Length
boolean L
char (n) An
date A10
fixed (p,q) Np-q,q
float F8
integer I4
long A (DYNAMIC)
long varchar A (DYNAMIC)
smallint I2
string An
time A8
timestamp A26
varchar An

DB2

RDBMS Data Type Natural Data Format/Length
date A10
blob B (DYNAMIC)
clob A (DYNAMIC)
dbclob U (DYNAMIC)
decimal(5) N5
decimal(10.4) N6.4
fixed character(5) A5
float Fn
graphic(n) Un
longvar A (DYNAMIC)
longvarg A (DYNAMIC)
large integer I4
scientific notation N10.6
small integer I2
special data A253
system date and time A10
time A8
timestamp A26
varchar An
varg 2*An
vargraphic(n) Un

Notes:

  1. Prerequisite for the use of the data types blob, clob, dbclob, graphic and vargraphic with DB2 is Entire Access Version 6.2.1 and above.
  2. In DB2, the data types graphic and vargraphic are only available when the database has been generated with a statement like CREATE DATABASE mydb USING CODESET UTF-8 TERRITORY US. Refer to your local DB2 documentation for further information.

Oracle

RDBMS Data Type Natural Data Format/Length
blob B (DYNAMIC)
char (n) An
clob A (DYNAMIC)
date A10
decimal (p,q) Np-q,q
double precision F8
float F4
integer I4
long A (DYNAMIC)
long raw B (DYNAMIC)
nchar(n) Un
nclob U (DYNAMIC)
number Nn
nvarchar2(n) Un
raw (n) Bn
real F4
rowid An
smallint I2
timestamp A26
varchar An
varchar2 (n) An

Notes:

  1. Do not confuse the data types long and long raw, and clob and blob in the same table.
  2. Prerequisite for the use of data type timestamp is Entire Access Version 6.2.1 and above. The timestamp variants timestamp with time zone and timestamp with local time zone are not supported.
  3. Prerequisite for the use of the data types nchar, nvarchar2 and nclob with Oracle is Entire Access Version 6.2.1 and above.

Microsoft SQL Server

RDBMS Data Type Natural Data Format/Length
binary (n) Bn
bit N1
char (n) An
datetime A26
float F8
image B (DYNAMIC)
int I4
money N15.4
nchar(2*n) Un
ntext U (DYNAMIC)
nvarchar(2*n) Un
real F4
smalldatetime A26
smallint I2
smallmoney N6.4
text A (DYNAMIC)
timestamp B8
tinyint I2
varbinary (n) Bn
varchar (n) An

Note:
Prerequisite for the use of the data types nchar, nvarchar and ntext with Microsoft SQL Server is Entire Access Version 6.2.1 and above. Furthermore, these data types require the use of the MSSQLODBC driver of Entire Access Version 6.2.1 and above.

Related Topics

The following documentation sections relate to converting data from Adabas or RDBMSs: