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The Data Type tab of the Column property sheet 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.
Scale Specifies the minimum number of digits after the decimal point when an arithmetic result is truncated to the maximum precision value.
See SQL Data Types.
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 Select this option to choose a Java class for the column from the dropdown list. This option is only shown for version 8.0.x databases.
Compress values Select this option to compress column values. Note that 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.
See Choosing whether to compress columns.
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.