[postgis-tickets] [PostGIS] #4682: Turn topology.topology and topology.layer into views

[PostGIS]

#4682: Turn topology.topology and topology.layer into views
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 Reporter:  strk      |      Owner:  strk
     Type:  task      |     Status:  new
 Priority:  medium    |  Milestone:
Component:  topology  |    Version:  master
 Keywords:            |
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 It would be helpful to move the data of topology.topology and
 topology.layer into views, for easy of portability, and to safely respect
 view permissions on existance of tables (See #4575).

 At the moment the TopoGeometry values do contain references to topology
 identifier and layer identifier, both of which are numeric and require
 some centralized support for assignment. It has to be defined how these
 identifiers should be dealth with, in terms of validity across databases.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4682>
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