Importing SQL Server SQL_VARIANT data type to OrientDB vertex - which property type should I use?

Question

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?

Answer 1

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