0
votes
1answer
37 views

Integrate static database with spatial database

I have some questions about how to integrate static database with spatial databases. problematic: I have several static data bases on different platforms (Oracle, MySQL, SQL Server) I want to turn ...
3
votes
1answer
1k views

Oracle spatial SDO_RELATE: why better performance result from UNION ALL/INTERSECT combined individual specified mask

Initially I was trying to find out why it's so slow to do a spatial query with multiple SDO_REALTE in a single SELECT statement like this one: SELECT * FROM geom_table a WHERE ...
2
votes
1answer
652 views

How to set appropriate spatial index for a feature class in Oracle?

I wanted to ask is there any known method how to set spatial index for my feature class in Oracle. I am working with ESRI 10.1 and I have various feature classes covering the whole area of my country ...
2
votes
1answer
998 views

Which one is better ?SQL server 2012 or Oracle 11g

I want to learn a database server, SQL server 2012 or Oracle 11g . I surf in the internet to compare SQL server and Oracle for spatial data and found good websites such as gisboston.it was very ...
2
votes
1answer
544 views

Oracle spatial - check polygon vertices counter clockwise

I need to import a huge number of polygons from a third party (as a csv file- array of x,y's). I have to check whether the polygon vertices are in clockwise or counter clockwise, finally i have to ...
19
votes
3answers
2k views

When should you NOT use a spatial index?

I am asking this because I was mainly working with Oracle but for the past year I've been doubling with PostGIS and SQLServer 2008. Most spatial functions in Oracle won't work without a spatial index ...
12
votes
3answers
1k views

Future of spatial databases

It may be a bit off-topic. I am eager to know the industry specific importance of Spatial Databases. Is Spatial Database a very important part of any GIS system? Or will we use other technologies to ...