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docs/3dcitydb/db-functions.md

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@@ -184,14 +184,14 @@ format required by the `envelope` column of the `FEATURE` table.
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The `citydb_pkg` package provides functions for performing CRS operations on a 3DCityDB instance.
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| Function | Return type | Description |
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------|--------------|--------------------------------------------------------------------|
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| **`change_schema_srid`**<br/>`(target_srid INTEGER, target_srs_name TEXT, schema_name TEXT, transform INTEGER)` | `SETOF VOID` | Updates the coordinate system for a database schema |
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| **`change_column_srid`**<br/>`(table_name TEXT, column_name TEXT, dim INTEGER, target_srid INTEGER, schema_name TEXT, transform INTEGER, geom_type TEXT)` | `SETOF VOID` | Updates the coordinate system for a geometry column |
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| **`check_srid`**<br/>`(srid INTEGER)` | `INTEGER` | Checks if a given `SRID` is valid |
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| **`get_coord_ref_sys_info`**<br/>`(srid INTEGER)` | `RECORD` | Returns the name, type and WKT representation of the specified CRS |
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| **`is_coord_ref_sys_3d`**<br/>`(srid INTEGER)` | `INTEGER` | Checks if a CRS is a true 3D system |
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| **`is_db_coord_ref_sys_3d`**<br/>`(schema_name TEXT)` | `INTEGER` | Checks if the CRS of the 3DCityDB is true 3D system |
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| Function | Return type | Description |
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|------------------------------------------------------------------------------------------------------------------------------|--------------|--------------------------------------------------------------------|
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| **`change_schema_srid`**<br/>`(target_srid INTEGER, target_srs_name TEXT, schema_name TEXT, transform INTEGER)` | `SETOF VOID` | Updates the coordinate system for a database schema |
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| **`change_column_srid`**<br/>`(table_name TEXT, column_name TEXT, target_srid INTEGER, schema_name TEXT, transform INTEGER)` | `SETOF VOID` | Updates the coordinate system for a geometry column |
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| **`check_srid`**<br/>`(srid INTEGER)` | `INTEGER` | Checks if a given `SRID` is valid |
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| **`get_coord_ref_sys_info`**<br/>`(srid INTEGER)` | `RECORD` | Returns the name, type and WKT representation of the specified CRS |
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| **`is_coord_ref_sys_3d`**<br/>`(srid INTEGER)` | `INTEGER` | Checks if a CRS is a true 3D system |
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| **`is_db_coord_ref_sys_3d`**<br/>`(schema_name TEXT)` | `INTEGER` | Checks if the CRS of the 3DCityDB is true 3D system |
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The primary function is `change_schema_srid`, which changes the CRS for all geometry columns within a 3DCityDB schema (default: `citydb`).
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It takes the database-specifc `SRID` (**S**patial **R**eference **ID**) of the new CRS and its OGC-compliant name as inputs.

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