`RELATE` |
Determines how two objects interact. |

`SDO_ARC_DENSIFY` |
Changes each circular arc into an approximation consisting of straight lines, and each circle into a polygon consisting of a series of straight lines that approximate the circle. |

`SDO_AREA` |
Computes the area of a two-dimensional polygon. |

`SDO_BUFFER` |
Generates a buffer polygon around a geometry. |

`SDO_CENTROID` |
Returns the centroid of a polygon. |

`SDO_CONVEXHULL` |
Returns a polygon-type object that represents the convex hull of a geometry object. |

`SDO_DIFFERENCE` |
Returns a geometry object that is the topological difference (MINUS operation) of two geometry objects. |

`SDO_DISTANCE` |
Computes the distance between two geometry objects. |

`SDO_INTERSECTION` |
Returns a geometry object that is the topological intersection (AND operation) of two geometry objects. |

`SDO_LENGTH` |
Computes the length or perimeter of a geometry. |

`SDO_MAX_MBR_ORDINATE` |
Returns the maximum value for the specified ordinate of the minimum bounding rectangle of a geometry object. |

`SDO_MBR` |
Returns the minimum bounding rectangle of a geometry. |

`SDO_MIN_MBR_ORDINATE` |
Returns the minimum value for the specified ordinate of the minimum bounding rectangle of a geometry object. |

`SDO_POINTONSURFACE` |
Returns a point that is guaranteed to be on the surface of a polygon. |

`SDO_UNION` |
Returns a geometry object that is the topological union (OR operation) of two geometry objects. |

`SDO_XOR` |
Returns a geometry object that is the topological symmetric difference (XOR operation) of two geometry objects. |

`VALIDATE_GEOMETRY` |
Determines if a geometry is valid. |

`VALIDATE_LAYER` |
Determines if all the geometries stored in a column are valid. |

`WITHIN_DISTANCE` |
Determines if two geometries are within a specified Euclidean distance from one another. |