# Data type conversion matrix - table of LiquibaseDataType to DatabaseDataType mappings

**URL:** <https://forum.liquibase.org/t/data-type-conversion-matrix-table-of-liquibasedatatype-to-databasedatatype-mappings/2771>\
**Category:** General Discussion\
**Created:** [November 21, 2013, 12:32am UTC](https://forum.liquibase.org/t/data-type-conversion-matrix-table-of-liquibasedatatype-to-databasedatatype-mappings/2771 "2013-11-21T00:32:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![G.RichardBellamy](https://avatars.discourse-cdn.com/v4/letter/g/7cd45c/32.png) [@G.RichardBellamy](https://forum.liquibase.org/u/G.RichardBellamy)\
**Post date:** [November 21, 2013, 12:32am UTC](https://forum.liquibase.org/t/data-type-conversion-matrix-table-of-liquibasedatatype-to-databasedatatype-mappings/2771/1 "2013-11-21T00:32:00Z")

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Since the structure of the data type conversions has changed from 2.x to 3.x, and now data types are registered using the Service Locator pattern (lines 25 - 30 of DataTypeFactory), it’s not so easy to determine the various LiquibaseDataType to DatabaseDataType mappings.

It would be great if there were a command line parameter or command that would dump the runtime data type conversion matrix in some legible format (HTML,XML,JSON,etc).

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**Author:** ![nvoxland](https://avatars.discourse-cdn.com/v4/letter/n/87869e/32.png) [@nvoxland](https://forum.liquibase.org/u/nvoxland)\
**Post date:** [November 21, 2013, 12:32am UTC](https://forum.liquibase.org/t/data-type-conversion-matrix-table-of-liquibasedatatype-to-databasedatatype-mappings/2771/2 "2013-11-21T00:32:00Z")

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That is something that is on my short list of things to implement and document, but hasn’t been done yet. I’m hoping to get to it in the next couple weeks.

Nathan