PowerDesigner中的数据类型对照表

The following numeric data types are available:

Standard data type

DBMS-specific physical data type
Content
Length

Integer int / INTEGER 32-bit integer
Short Integer smallint / SMALLINT 16-bit integer
Long Integer int / INTEGER 32-bit integer
Byte tinyint / SMALLINT 256 values
Number numeric / NUMBER Numbers with a fixed decimal point Fixed
Decimal decimal / NUMBER Numbers with a fixed decimal point Fixed
Float float / FLOAT 32-bit floating point numbers Fixed
Short Float real / FLOAT Less than 32-bit point decimal number
Long Float double precision / BINARY DOUBLE 64-bit floating point numbers
Money money / NUMBER Numbers with a fixed decimal point Fixed
Serial numeric / NUMBER Automatically incremented numbers Fixed
Boolean bit / SMALLINT Two opposing values (true/false; yes/no; 1/0)

 

Character data types :

 

Standard data type
DBMS-specific physical data type
Content
Length

Characters char / CHAR Character strings Fixed
Variable Characters varchar / VARCHAR2 Character strings Maximum
Long Characters varchar / CLOB Character strings Maximum
Long Var Characters text / CLOB Character strings Maximum
Text text / CLOB Character strings Maximum
Multibyte nchar / NCHAR Multibyte character strings Fixed
Variable Multibyte nvarchar / NVARCHAR2 Multibyte character strings Maximum

 

Time data types:

 

Standard data type
DBMS-specific physical data type
Content
Length

Date date / DATE Day, month, year
Time time / DATE Hour, minute, and second
Date & Time datetime / DATE Date and time
Timestamp timestamp / TIMESTAMP System date and time

 

Other data types :

 

Standard data type
DBMS-specific physical data type
Content
Length

Binary binary / RAW Binary strings Maximum
Long Binary image / BLOB Binary strings Maximum
Bitmap image / BLOB Images in bitmap format (BMP) Maximum
Image image / BLOB Images Maximum
OLE image / BLOB OLE links Maximum
Other User-defined data type
Undefined undefined Undefined. Replaced by the default data type at generation.

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