Schema elements previously developed as part of various GA4GH efforts had been assembled in the SchemaBlocks demonstrator. Those schemas and documentation will be re-implemented in this space.

Additional information about data formats can be found on the GA4GH::Metadata site.

Data Models

Different projects and products from the GA4GH ecosystem are assumed to develop or adopt domain specific data models.

GA4GH Data Working Group | @mcourtot | @mbaudis 2019-10-15: more ...

Dates & Times

Date and time formats are specified as ISO8601 compatible strings, both for time points as well as for intervals and durations.

An optionally required granularity may be specified as part of the respective attributes' documentations.

Links

  • external information can be found at W3C: [ISO8601](https://www.w3.org/TR/NOTE-datetime)

Units of time

  • Y = year
  • M = month
  • D = day
  • H = hour
  • M = minute
  • S = second
  • .S = decimal fraction of a second

@mbaudis 2018-12-21: more ...

Genome Coordinates

GA4GH Recommendation

  • We recommends the use of “0-start, half-open” (interbase) coordinate system in all systems
  • This is not a retrospective recommendation for existing standards and products
  • “1-start, fully-closed” should be used when displaying coordinates through a GUI or report

@andrewyatz 2019-02-20: more ...

Identifiers and CURIEs

Status: Recommendation

One of the GA4GH conventions is to use CURIEs as (external) identifiers.

This is a maturing recommendation; please see also a previous discussion on Github, and the links from there.

@mbaudis | @cmungall | @reece | @jmcmurry | @mellybelly | cross GA4GH alignment 2019-08-28: more ...