Explanation of Registry Tables

The following lists some of the tables that the Registry creates with a description of the tables purpose.

Note: the database tables are primarily used for persistence of Registry information. Do not expect modifying database values to have any effect on a running Registry. Metadata Technology does not recommend modifying database tables unless explicitly instructed to do so.

Structural Metadata Persistence

Table Name	Description
registry_maintainables	A list of all the maintainables in the Registry.
registry_maintainable_sdmx	Each maintainable in the Registry stored in its SDMX form.
registry_maintainable_ser	Each maintainable in the Registry stored as a Java serialised object. This is used for performance purposes as de-serialising a serialised object is faster than recreating it from its SDMX form.

Transactional Information

Table Name	Description
tx_backup	Stores the transaction number for each individual structure submission / modification. Note a single transaction can be for multiple metadata structures
sdmx_transaction	Stores information about each transaction, such as the user who performed it, the date and event type (Replace, Delete, etc)
sdmx_transaction_item	Links the URN of a individual structural metadata to a transaction number.
sdmx_backup	Stores a binary image of the transaction in gzipped format of the XML

Registry Settings

Table Name	Description
registry_settings	Persists most of the registry settings in a key / value format where the column "name" identifies the setting and the column "value" its value.
registry_settings_dv	Persists the data validation settings of the Registry
registry_settings_ser	Serialised Registry settings. This is used for when the the setting to be stored cannot be described as a string in the registry_settings table and its serialised form needs to be persisted.

Auditing and Logging

Table Name	Description
registry_audit	Stores Audit information from HTTP requests, such as the requested Web Service, information about the requesting machine and the associated transaction_id (if appropriate)
registry_logs	For every recorded log event in the Registry, a row is stored with the time taken and Transaction Id (if appropriate)
registry_logs_zip	The zipped up store of the logging information for a particular log event. This information is usually sent to the Apache Tomcat "Registry.log" file, but for any particular request, the same information is stored in a zipped form.