I have to implement on Enterprise Architect a GIS model compliant to Inspire directive. Then, I have to create the ddl code to insert in postgres to create the physical structure of my db.
The problem is that I don't know what type of diagram I have to set up on enterprise architect.
Now I have created a domain model and imported in my foundation schema the classess directly from the Inspire repository (http://inspire.ec.europa.eu/index.cfm/pageid/2/list/datamodels). I see the issue when I create the ddl and I import this on postgres because postgres does not recognize the Inspire types (eg. CharapterString, GM_Point).
I hope that I did make myself clear.
Related
I know it can be quite odd question, but I was wondering if there's a tool that allows me to convert an Access DB to PostgreSQL with the table structure... I've found some third-party tools as dBForce that import data but not the structure.
Thanks
I created an entity-relationship diagram (logical model) and engineered it to a relational model.
The tables were generated. Now I need to use them from the connection XE as you see in the picture.
The tables I made can only be seen on the data modeler design view in the "Browser", how do I get them on the connection "XE" to generate data dictionary, etc?
There are three possibilities:
you just need to expand the tables item in the tree to see your tables
You are looking in the wrong schema/user - go down to Other Users, and find the schema those tables belong to
The tables do not exist in the current database
If #3 is the issue, you would need to create them, possibly using the information in your Data Model - that is, you can generate the DDL/SQL scripts for those tables.
Then taking those scripts, run them while connected to the appropriate database/schema.
Disclaimer: I'm an Oracle employee and the product manager for these tools.
I need to link an external dbf table into an existing PostgreSQL database. I managed to import that table into PostgreSQL but that creates a copy and therefor redundant data. The dbf table is the attribute table of a shapefile, but I don’t need the spatial aspect of it.
The exercise is part of a project to move data from an MS Access database to PostgreSQL hoping that the data then become accessible from QGIS. Th dbf table is at the moment linked into the MS Access database and used in queries (views) which I want to re-build in PostgreSQL.
I found lots of posts about importing dbf tables into but nothing which would work about linking a dbf table. The closest I got was the Foreign Data Wrapper, but I didn’t manage to use it for my purpose. I’m using PostgreSQL with pgAdmin 4.24.
Many thanks
The exercise is part of a project to move data from an MS Access database to PostgreSQL hoping that the data then become accessible from QGIS.
If you must use PostgreSQL in order to provide access to your spatial data from QGIS, I see no other option than importing the shapefile into PostgreSQL (PostGIS). If for whatever reason you do not need the geometries, you can drop the geometry column after importing the shapefile into the database:
ALTER TABLE table_name DROP COLUMN column_name;
Alternative scenario:
If we're talking about static shapefiles and you don't really need to use PostgreSQL, you can use GeoServer to publish this shapefile via Web Feature Service (WFS) - it is at least what I do in small projects. The easiest option would be to copy the shapefiles into a so called GeoServer Data Directory and publish them afterwards. After that you'd be able to access the data from QGIS using its WFS Client.
I am evaluating OrientDB as a replacement for MS SQL Server. One of the SQL Server tables I need to import into OrientDB contains time-series data with the value column using a SQL_VARIANT data type. I'm struggling to identify the best data type to use for the equivalent property in a new OrientDB vertex. I'm hesitant to convert it a STRING, but I don't see an equivalent variant type. Any recommendations?
OrientDB Teleporter is a tool that synchronizes a RDBMS to OrientDB database. You can use Teleporter to:
Import your existing RDBMS to OrientDB
Keep your OrientDB database synchronized with changes from the RDBMS. In this case the database on RDBMS remains the primary and the database on OrientDB a synchronized copy. Synchronization is one way, so all the changes in OrientDB database will not be propagated to the RDBMS
Teleporter is fully compatible with several RDBMS that have a JDBC driver: we successfully tested Teleporter with Oracle, SQLServer, MySQL, PostgreSQL and HyperSQL. Teleporter manages all the necessary type conversions between the different DBMSs and imports all your data as Graph in OrientDB.
NOTE: This feature is available both for the OrientDB Enterprise Edition and the OrientDB Community Edition. But beware: in community edition you can migrate your source relational database but you cannot enjoy the synchronize feature, only available in the enterprise edition.
How Teleporter works
Teleporter looks for the specific DBMS meta-data in order to perform a logical inference of the source DB schema for the building of a corresponding graph model. Eventually the data importing phase is performed.
Teleporter has a pluggable importing strategy. Two strategies are provided out of the box:
naive strategy, the simplest one
naive-aggregate strategy. It performs a "naive" import of the data source. The data source schema is translated semi-directly in a correspondent and coherent graph model using an aggregation policy on the junction tables of dimension equals to 2
To learn more about the two different execution strategies click here.
For more information: http://orientdb.com/docs/3.0.x/teleporter/Teleporter-Home.html
Hope it helps
Regards
I'm a Neo4j new user and I played around with the webadmin interface of Neo4j to create small databases and simple queries in Cypher. Now I want to use Neo4J to create a graph with my existing database. It's a postgresql database with millions of entries with the same structure (Neo4J is very adapted to represent these data). My question is how to import these data ? What is the easiest way to do that ? I already saw that Cypher recognizes csv files but do I have to create a csv file with my data or is there another way to import them ? Thank you for your help. Sam
One option is to export your postgres data to csv and apply LOAD CSV to import them into the graph.
Another way is writing a script in a language of choice (I'd vote for groovy here) that connects to Postgres using JDBC and connects to Neo4j and then applies the business logic to transform between the two.
A third option is using a ETL tool like Talend. It basically does the same as your custom script but provides a point & click interface to define the transformation, see http://neo4j.com/blog/fun-with-music-neo4j-and-talend/ for more details.