| Type name |
TYPE |
Remarks |
| Automatic ID |
Integer |
+ Identity (1, 1) |
| Text |
Varchar (50) |
The number in the brackets is the text length. |
| Long Integer |
Integer |
|
| Integer |
Short |
|
| Double Precision type |
Double, float |
|
| Single precision type |
Real |
|
| Byte type |
Byte |
|
| Decimal |
NUMERIC (6, 2) |
|
| Currency |
Money |
|
| Remarks |
Text |
|
| Date/time |
Date, time, datetime |
|
| Yes/No |
Bit |
|
| OLE object |
OLEObject |
|
Primary key
Required. not null.
Default Value: default date ()
-----------------------------------------------------------------------------
Example
Description of Table Name field name type affiliated attributes
--------------------------------------------------------------------------------
Create table mytable (m_id integer identity () primary key, -- auto-incrementing type, primary key
M_class varchar (50) not null default 'aaa', -- text, non-null, default value 'aaa'
M_int integer not null, -- long integer, non-null
M_numeric NUMERIC (6, 2), -- decimal type
M_money money not null default 0.00, -- currency type, non-empty, default 0.00
M_memo text, -- Remark type
M_date date default date (), -- date type, default: current date
M_boolean bit default yes, -- Boolean, yes by default
M_blob oleobject, -- blob type
M_double double, -- Double Type
M_float real) -- single precision type
Bytes ----------------------------------------------------------------------------------------------------------------------------