How to save the map features of polyline to a SQL database?

I have an application with a plan and I'm looking to add the polyline feature, but I'm a little confused as to how I would add all geographical points in my database?  They all get stuck and added in a column?  Or do I have to continue to add columns for each set of points?

Right now my DB is configured to save a point location and I wonder if I have to make drastic changes to accommodate the polylines.

Any help is appreciated at will be loved and marked as resolved, if it has solved the issue.

I don't know exactly what is a polyline, but I guess it's an ordered list of gps coordinates (please, correct me if I'm wrong)

you start with the list and you want to store.
to do that you first create an entry in your reference table, like "insert into poly_references (name) value ("name").
take the id of insert QSqlQuery.lastInsertId () .toInt)

You now have a reference id.
In your polyline, which has a column referenceId, you insert all entries from polyline with this id.

To retrieve all you first ask your reference table and retrieve the name and the ID. with the id query you the polyline table.

I use the firefox plugin sqlitemanager to create and experiment with databases and sqlite queries, I can highly recommend it.

Tags: BlackBerry Developers

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