The references below are specific to Informix Spatial DataBlade 8.10. However, IBM DB2 references are very similar but do not have the prefix SE_. Functions prefixed with SE_ are not OGC compliant. Instead, they are additional functions provided to enhance usability.
ST_Area
ST_AsBinary
ST_AsText
ST_Boundary
ST_Buffer
ST_Centroid
ST_Contains
ST_ConvexHull
ST_CoordDim
ST_Crosses
ST_Difference
ST_Dimension
ST_Disjoint
ST_Distance
ST_EndPoint
ST_Envelope
ST_EnvelopesIntersect
ST_Equals
ST_ExteriorRing
ST_GeometryN
ST_GeometryType
ST_GeomFromText
ST_GeomFromWKB
ST_InteriorRingN
ST_Intersection
ST_Intersects
ST_IsClosed
ST_IsEmpty
ST_IsRing
ST_IsSimple
ST_IsValid
ST_Length
ST_LineFromText
ST_LineFromWKB
ST_MlineFromText
ST_MlineFromWKB
ST_MpointFromText
ST_MpointFromWKB
ST_MpolyFromText
ST_MpolyFromWKB
ST_NumGeometries
ST_NumInteriorRing
ST_NumPoints
ST_OrderingEquals
ST_Overlaps
ST_Perimeter
ST_Point
ST_PointFromText
ST_PointFromWKB
ST_PointN
ST_PointOnSurface
ST_PolyFromText
ST_PolyFromWKB
ST_Polygon
ST_Relate
ST_SRID
ST_StartPoint
ST_SymDifference
ST_Touches
ST_Transform
ST_Union
ST_Within
ST_WKBToSQL
ST_WKTToSQL
ST_XST_Y
SE_AsShape
SE_GeomFromShape
SE_Is3D
SE_IsMeasured
SE_LineFromShape
SE_LocateAlong
SE_LocateBetween
SE_MSE_MlineFromShape
SE_MpointFromShape
SE_MpolyFromShape
SE_PointFromShape
SE_PolyFromShape
SE_ShapeToSQLSE_Z
