# ISO 19115-3 Codelist Report

## Codelists from the Metadata for Maintenance Information (mex) Namespace

Scope | Codelists from the Metadata for Maintenance Information (mex) Namespace
Field of Application | ISO TC211 Metadata Standards
Version (Date) | 1.0 ()

## MD_MaintenanceFrequencyCode ( MD_MaintenanceFrequencyCode ):

Description: frequency with which modifications and deletions are made to the data after it is first produced

Entry | Definition
--- | ---
MD_MaintenanceFrequencyCode_continual | resource is repeatedly and frequently updated
MD_MaintenanceFrequencyCode_daily | resource is updated each day
MD_MaintenanceFrequencyCode_weekly | resource is updated on a weekly basis
MD_MaintenanceFrequencyCode_fortnightly | resource is updated every two weeks
MD_MaintenanceFrequencyCode_monthly | resource is updated each month
MD_MaintenanceFrequencyCode_quarterly | resource is updated every three months
MD_MaintenanceFrequencyCode_biannually | resource is updated twice each year
MD_MaintenanceFrequencyCode_annually | resource is updated every year
MD_MaintenanceFrequencyCode_asNeeded | resource is updated as deemed necessary
MD_MaintenanceFrequencyCode_irregular | resource is updated in intervals that are uneven in duration
MD_MaintenanceFrequencyCode_notPlanned | there are no plans to update the data
MD_MaintenanceFrequencyCode_unknown | frequency of maintenance for the data is not known
MD_MaintenanceFrequencyCode_periodic | resource is updated at regular intervals
MD_MaintenanceFrequencyCode_semimonthly | resource updated twice a monthly
MD_MaintenanceFrequencyCode_biennially | resource is updated every 2 years

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