The table access protocol (TAP) defines a service protocol for accessing general table data,
including astronomical catalogs as well as general database tables. Access is provided for …

Abstract The Simple Image Access protocol (SIA) provides capabilities for the discovery,
description, access, and retrieval of multi-dimensional image datasets, including 2-D images …

This document describes the Data Access Layer Interface (DALI). DALI defines the base
web service interface common to all Data Access Layer (DAL) services. This standard …

This document describes an XML encoding standard for IVOA Resource Metadata, referred
to as VOResource. This schema is primarily intended to support interoperable registries …

This document describes the linking of data discovery metadata to access to the data itself,
further detailed metadata, related resources, and to services that perform operations on the …

This note describes the technical architecture of the International Virtual Observatory
Alliance (IVOA). The description is decomposed into three levels. Level 0 is a general, high …

Registries provide a mechanism with which VO applications can discover and select
resources-first and foremost data and services-that are relevant for a particular scientific …

This document describes the minimum interface that a web service requires to participate in
the IVOA. Note that this is not required of standard VO services developed prior to this …

An application that queries or consumes descriptions of VO resources must be able to
recognize a resource's support for standard IVOA protocols. This specification describes …

This IVOA Note discusses several clarifications to the TAP protocol stack, ie, to the ADQL
dialect, the UWS job system, the VOSI metadata interfaces, and TAP itself. It also proposes a …