One or more structured sets of persistent data, managed and stored as a unit and generally associated with software to update and query the data.

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3
votes
2answers
725 views

Table structure for a reverse geocoding database

I should start by saying that I do not have much experience with GIS so this question may be foolish. What I do have is a database for performing a lookup from a set of coordinates to find the ...
8
votes
3answers
2k views

Suggestion about the database to be used with OpenLayers

Can anyone suggest me which database to be used with OpenLayers? I have to store the values in a DB table and retrieve them (trivial tasks). which is better MySQL or PostGIS? Can anybody give benefits ...
4
votes
3answers
380 views

Looking for good resources for batch files in relation to databases/geodatabases

I hesitated a bit before asking this, as it isn't necessarily a GIS specific question, though I'm using it to update geodatabases. I have found plenty of hits on a Google search, but frankly, many of ...
3
votes
1answer
508 views

Sharding of geospatial data

Reading through Rosenberg & Mateos' The Cloud at Your Service I stumbled upon the concept of database sharding. Authors point out to several advantages of such approach including high (online) ...
8
votes
2answers
767 views

What are the Pros and Cons of hstore data type in postgis?

PostgreSQL has a module named hstore that implement the use of key/value pairs (it's something like the OpenStreetMap model, but in a single table). What are the Pros and Cons of hstore regarding GIS ...
2
votes
1answer
226 views

Are there any efficient methods for processing ArcGIS-based database tables outside of the ArcEtc program library?

Let us say, for the sake of argument, that you are working with a table that is over 2 GB in size (so .dbf is automatically ruled out... right?). To even create such a document, ArcGIS requires that ...
2
votes
1answer
346 views

stratigraphic ranking with field calculator?

I would like to populate a feature class float attribute with a numerical ranking of a text attribute of a geologic map. I have a field named [sheet_unit] with strings such as "H10, Q" and "J10, Pl" ...
10
votes
2answers
1k views

How to design a Spatial Database for temporal Data?

I am working on a Weather based GIS App. I have the data from several weather stations, and this data will updated daily (by a web service). The obstacles I am facing are: There are currently 40 ...
1
vote
2answers
786 views

Apply Database based Rules to Openlayers

im trying to apply rules, where the data is fetched from an external database. This is my code: // create a new style and add rules var defStyle = new OpenLayers.Style({ ...
6
votes
2answers
704 views

Imagery Database/Metadata Store

I'm a Remote Sensing PhD student, and as such I have a large number of satellite images that I'm working with. I'm starting to fail to keep track of them all and I have a lot of metadata that I want ...
5
votes
2answers
2k views

Data organization strategies for .csv and .shp

I'm organizing a large amount of data for a project and the data is stored in .csv format, with a code to relate each row to a polygon in a .shp. I was planning on converting the .csv data into .dbf ...
7
votes
1answer
1k views

Why is my XY Event Source layer only displaying at full extent?

My XY Event Source layer is only displaying at full extent and when I zoom in, the features disappear. If I select a feature in the attribute table, the feature is highlighted. When I see this for a ...
11
votes
3answers
1k views

What is a good taxonomy or naming convention for files and folders containing GIS data?

My company has collected about 30 TBs of GIS data over the past 8 years, and I always find myself asking the following questions: What type of data do we have for a given geographic area? What are ...
23
votes
9answers
4k views

Is there any way I can use a Key-Value store for geospatial data?

I have used many relational databases in the past, but I have also read about all NoSQL databases, and the Key-Value stores looks interresting. When I store geometric object I mostly use five indexed ...
1
vote
5answers
1k views

Store Geometry in a database with the ESRI Silverlight API

Is it possible to store geometry objects in a database using the ESRI Silverlight API? For this particular case, the client may have SQL Server 2005 installed instead of 2008 and therefore I can not ...