| Firebird Documentation Index → Firebird 2.5 Language Reference → System Tables → RDB$FIELD_DIMENSIONS |
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RDB$FIELD_DIMENSIONS stores the dimensions of array columns.
| Column Name | Data Type | Description |
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| RDB$FIELD_NAME | CHAR(31) | The name of the array column. It must be present in the RDB$FIELD_NAME field of the RDB$FIELDS table |
| RDB$DIMENSION | SMALLINT | Identifies one dimension in the array column. The numbering of dimensions starts with 0 |
| RDB$LOWER_BOUND | INTEGER | The lower bound of this dimension |
| RDB$UPPER_BOUND | INTEGER | The upper bound of this dimension |
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| Firebird Documentation Index → Firebird 2.5 Language Reference → System Tables → RDB$FIELD_DIMENSIONS |