This tab has the following components:
Built-in type This option enables you to choose a built-in data type for the column from the dropdown list. Integers, character strings, and dates are examples of built-in data types. For some of these types, you can specify size and/or scale:
| Size | Specifies the length of string columns, or the total number of digits to the left and right of the decimal point in the result of any decimal arithmetic for numeric columns. For numeric columns, the size is also called the precision value. See precision option. |
| Units |
Displays the unit corresponding to the data type's size. Possible units include: bits, bytes, characters, or digits. For CHAR and VARCHAR data types, you can specify the unit as bytes or characters. |
| Scale | Specifies the minimum number of digits after the decimal point when an arithmetic result is truncated to the maximum precision value. |
Set Spatial Reference System Select this option to specify the spatial reference system. This option is available when you specify a spatial data type (such as ST_Point or ST_Polygon) in the Built-in Type field. Possible spatial reference systems include 0: Default, 4326: WGS 84, 1000004326: WGS 84 (planar), 2147483646: sa_planar_unbounded, and 2147483647: sa_octahedral_gnomonic. See Spatial reference systems (SRS) and Spatial reference identifiers (SRID).
Domain Select this option to choose a domain from the dropdown list. A domain is a named combination of built-in data types, default value, check condition, and nullability.
Java class This option is only shown for version 8.0.x databases. Select this option to choose a Java class for the column from the dropdown list.
Compress values Select this option to compress column values. If a column is compressed, database server activities such as indexing, data comparisons, and statistics generation may be slightly slower if they involve the compressed column because the values must be compressed when written, and decompressed when read.
Maintain BLOB indexes for large values Select this option to maintain BLOB indexes for large values. Only character, binary, and bit types support this option. See CREATE TABLE statement.
See also |
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