|Oracle® Spatial and Graph Topology Data Model and Network Data Model Graph Developer's Guide
12c Release 1 (12.1)
|PDF · Mobi · ePub|
This preface contains:
The following are changes in Oracle Spatial and Graph Topology Data Model and Network Data Model Graph Developer's Guide for Oracle Database 12c Release 1 (12.1).
The following features are new in this release:
You can model objects of interest along the network as features. A feature consists of one or many feature elements. A feature element can be a point, a link, or a partial link along the network. You can define feature layers on top of a network. For example, restaurants, and hotels can each be defined as a feature layer on a road network, and switches can be defined as a feature layer on an electrical network.
For more information about feature modeling, see the following:
New PL/SQL subprograms related to feature modeling (each documented in Chapter 6):
SDO_NET.ADD_CHILD_FEATURE SDO_NET.ADD_CHILD_FEATURES SDO_NET.ADD_FEATURE SDO_NET.ADD_FEATURE_ELEMENT SDO_NET.ADD_FEATURE_ELEMENTS SDO_NET.ADD_FEATURE_LAYER SDO_NET.DELETE_CHILD_FEATURES SDO_NET.DELETE_CHILD_FEATURES_AT SDO_NET.DELETE_DANGLING_FEATURES SDO_NET.DELETE_DANGLING_LINKS SDO_NET.DELETE_DANGLING_NODES SDO_NET.DELETE_FEATURE_ELEMENTS SDO_NET.DELETE_FEATURE_ELEMENTS_AT SDO_NET.DELETE_FEATURES SDO_NET.DELETE_PHANTOM_FEATURES SDO_NET.DROP_FEATURE_LAYER SDO_NET.GET_CHILD_FEATURE_IDS SDO_NET.GET_DANGLING_FEATURES SDO_NET.GET_DANGLING_LINKS SDO_NET.GET_DANGLING_NODES SDO_NET.GET_FEATURE_ELEMENTS SDO_NET.GET_FEATURE_LAYER_ID SDO_NET.GET_FEATURES_ON_LINKS SDO_NET.GET_FEATURES_ON_NODES SDO_NET.GET_PARENT_FEATURE_IDS SDO_NET.GET_PHANTOM_FEATURES SDO_NET.POST_XML SDO_NET.UPDATE_FEATURE SDO_NET.UPDATE_FEATURE_ELEMENT
Multimodal networks consist of multiple modes of transportation. Many metropolitan transportation networks consist of multiple modes such as buses, subways, and commuter rail lines, where transfers across modes are possible (for example, from a bus to the subway). Each transportation mode has a component network within the larger transportation network, and has its own schedule-related information. The component networks can be modeled using nodes and links, and the transfers across modes can be modeled as links that connect the stops where transfers are possible.
For more information about support for multimodal networks and temporal modeling and analysis, see the following:
The SDO_NET.LOGICAL_POWERLAW_PARTITION procedure has a new (additional) parameter named
part_size_tolerance, which specifies the allowed tolerance in partition size expressed as a percentage of
The Java in-memory API and the related SDO_NET_MEM PL/SQL package, previously announced as deprecated, have been removed from this manual. (The documentation for these features remains in the Release 11.2 manual.) You are instead encouraged to use the load-on-demand approach.