A spatial data infrastructure (SDI) is a data infrastructure implementing a framework of geographic data, metadata, users and tools that are interactively connected in order to use spatial data in an efficient and flexible way.

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Convert spatial points data to line data for use in Line Layer in SQL Server Reporting Services (SSRS)

I have a query that returns the fields Order, Lat, Long, SpatialData, <OtherStuff>. SpatialData is a point. I want to create a line layer that draws lines between my points based on the order ...
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What is the SQL command to get 20 closest points from some center location

There are 1.6 million rows. Must not compute distance for all rows. Spatial index is available This is the table structure. The name of the table is businessauxiliary. So yes I used MyIsam, added ...
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How to take advantage of multiple spatial indices?

All, I'm building a view which uses a spatial intersect (STIntersect in MSSQL 2012) between points (student addresses with address information) and polygons (school boundary polygons with school ...
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Find the neighbouring polygons of a given polygon in a MySQL spatial table in ver < 5.6.1

Finding neighbouring shapes in MySQL spatial table made up of ID and 2D geometry (polygon) fields. I have a table with an ID column and a geometry column (holding a polygon) representing various ...
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139 views

Is there are way to use Fine Grain Auditing to record Varray bind values?

I have an application, and would like to use Oracle's FGA (Fine Grained-Auditing) to record varray bind information. Specifically, I am using Oracle Spatial and need to know at what extent users are ...
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Combine Oracle locator instance with Oracle spatial instance with db link

we plan to have two oracle databases, one with oracle spatial installed, the other one just has the locator option. Is it possible to create an oracle database link between the two databases in order ...
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107 views

Why do we need myisam spatial extension anyway?

If just to determine whether a point is within a rectangle, What is wrong with this query? EXPLAIN SELECT DISTINCT TB.ID, TB.Latitude, TB.Longitude FROM TableBusiness AS TB WHERE ...
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PostGIS - Effects of polygons with large number of verticies [closed]

I have a large table that stores, among other attributes, a geometry type. I have a GIST index on this attribute. However, when I perform even the most basic queries [say, select count(*) from table ...
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Repair with keycache in mysql runs EVERY time. Can't even log why it's happening

I have a MyISAM table w/ ~1million rows and two indexes - one's a three-column key, and the other is a spatial index for bounded SELECT statements on a separate point column. My insert statements ...
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58 views

sdo_tune.quality_degradation returning negative values

While running the sdo_tune.quality_degradation function on one of our Oracle databases most of the results were around 1 but a number had values like -556127.225. Does this mean that these indexes ...
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PostGIS: Remove stale/obsolete geometry columns from the geometry_columns table [closed]

I understand that the function Populate_Geometry_Columns() inserts records in the geometry_columns table for geometry columns that are not yet listed there. However, an invocation of ...
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193 views

What database do most mobile start ups use? [closed]

mongodb? MySQL? PostgreSQL? If someone would add pluses and minus, let me know. Why I ask: I am a mobile startup. I need a database that supports spatial indexes. The spatial index must be able to ...
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136 views

MongoDB Benchmark with write-intensive on geo-indexed DB

I am using PostgreSQL 9.3 on AWS RDS to store geo information into an indexed table of points. My data is write-oriented, meaning that I write nearly 1,000 points per each geo search query. I am ...
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682 views

migrate SQL Server geography data to PostGIS geometry data

I'm trying to use SSIS to transfer point data from a Geography column in SQL Server 2008 R2 to a geometry column in a Greenplum (Postgres 8.2.15) database with PostGIS. I know there's a way to do the ...
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How do I get spatial index feature if I mainly use innodb?

My current strategy is to create another table in myisam that contains those spacial information. Then if I want to find 20 closest business, I'll just use join. Is this a good idea?
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Multi-master synching in three geographically separate datacentres

Our company needs to create an application that operates in all parts of the world. We are looking to have three servers (one in Europe, one in Asia and one in America). I'm looking to use ...
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Find the closest bar, when searching for a drink

Problem: Find the closest bar that serves the drink(s) I'm looking for. Here you can find the generated MySQL code http://pastebin.com/5Uc2ewUW The API Request that interacts with this problem ...
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43 views

STDisjoint() = not STIntersects()?

In short, are STDisjoint() and STIntersects() antipodes of each other? According to the documentation, it seems that they are. But there is no explicit note about it. Are there any tricks? Which one ...
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Column not found in dbase file

When I try to import a shapefile using db2se, I specify the input columns to be loaded in the syntax as the COLUMN NAME db2se import_shape <dbname> -userId <username> -pw <password> ...
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82 views

MongoDB to store vehicle tracking information

I am building an app similar to Uber for tracking vehicles. Since the update frequency is so high (accounting for several users), I want to know the general practices involved for making writes faster ...
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121 views

Insert GEOMFROMTEXT (lat lng)

I am stuck, Please help. "INSERT INTO `routeplans` ( `polygon` ) VALUES ( GEOMFROMTEXT( 'POLYGON( (39.593254951279626 -119.2415714263916, 39.596231192849004 -119.2441463470459, ...
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319 views

Suitable database to store GPS track data

I have a network of vehicles. Each vehicle is equipped with a GPS sensor sending data over 3G to my FTP server. As a first solution to test the sensors, each vehicle sensor sends a .csv file to the ...
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Optimised way to search over 2 milllion poi data in mysql

We have over 2 million poi data in our mysql db. At any time we need to find what is the nearest point based on the following formula found at this link http://sqlfiddle.com/#!2/abba1/4 select *, ( ...
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35 views

Raster files into DB2

Team, We have been loading shapefiles into DB2 using db2se import utilities. I have been trying to find help to load Raster files and i wasnt able to find any help on this. it would be really ...
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38 views

Oracle spatial database

I am trying to run a simple query mentioned on: http://docs.oracle.com/cd/B19306_01/appdev.102/b14255/sdo_operat.htm#g996876 SELECT c.mkt_id, c.name FROM cola_markets c WHERE ...
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65 views

Backup in Mysql periodically

I have trouble scheduling a backup in mysql periodically, most of the tools do not recognize the geometric field, for example navicat which says Can not get geometry object from data you send to ...
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119 views

Error creating spatial index sqlserver

I am creating spatial index on sqlserver table. CREATE SPATIAL INDEX [SIndex_udt_cell_SP_GEOMETRY] ON [udt_cell] ( [SP_GEOMETRY] )USING GEOMETRY_GRID WITH ( BOUNDING_BOX =(80.0713, 26.389581, ...
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22 views

A spatial query return no result when obviously there is result [duplicate]

Possible Duplicate: Less restrictive query return less result due to simple removing one additional constraint SELECT DISTINCT TB.ID, TB.Latitude, TB.Longitude, ...