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#OData Extension for Data Aggregation V4.0 published

We are pleased to announce the approval and publication of a new Committee Specification by the members of the OASIS Open Data Protocol (OData) TC:

OData Extension for Data Aggregation Version 4.0
Committee Specification 01
26 February 2014


OData is a REST-based Web protocol. It builds on HTTP, AtomPub, and JSON using URIs to address and access data feed resources. It enables information to be accessed from a variety of sources including (but not limited to) relational databases, file systems, content management systems, and traditional Web sites.

This specification adds basic grouping and aggregation functionality (e.g. sum, min, and max) to the Open Data Protocol (OData) without changing any of the base principles of OData.

The prose specification and related files are available here:

Editable source (Authoritative):



OData Aggregation ABNF Construction Rules Version 4.0 and OData Aggregation ABNF Test Cases:

OData Aggregation Vocabulary:

Distribution ZIP files

For your convenience, OASIS provides a complete package of each prose specification and related files in a ZIP distribution file. You can download the ZIP files here:

Members of the Open Data Protocol (OData) TC [1] requested a Special Majority Vote to approve this specification as a Committee Specification. The specification had been released for public review as required by the TC Process [2]. The vote to approve as a Committee Specification passed [3], and the approved CS01 is now available online in the OASIS Library as referenced above.

Our congratulations to the TC on achieving this milestone.

========== Additional references:

[1] OASIS Open Data Protocol (OData) TC

[2] Public reviews:
15-day public review, 27 January 2014:
– Comment resolution log:

30-day public review, 19 August 2013:
– Comment resolution log:

[3] Approval ballot: