B2B Integration : A Practical Guide to Collaborative E-commerce

Business Process Management (BPM) 149
BPML uses XPath as the basis for its expression language. XPath
provides a declarative expression language with rich semantics for
expressing condition logic, calculations and selection predicates.
Business Process Query Language (BPQL)
The Business Process Query Language (BPQL) intends to provide
a standard interface for business process deployment (in a process
repository) and execution (in a process server). BPMI.org is still
developing this language.
The interface for process repository is based on the Distributed
Authoring and Versioning Protocol (WebDAV). It would enable users to
manage the deployment of process models contained and managed by
the repository. These process models could be exposed by the enterprises
as Web services for process registration, advertising and discovery
purposes.
The BQML interface to a process server gives the users the
capabilities to query and control the state of execution of process
instances managed by the server. It is based on the Simple Object
Access Protocol (SOAP).
5.4.2. XLANG
XLANG, an initiative of Microsoft, is an XML-based language that
describes the logical sequencing of business processes and their
implementation by using various application services. It is expected to
serve as the basis for automated protocol engines that can track the
state of process instances and help enforce protocol correctness in
message flows.
5.5. Standard Business Processes
A key requirement of B2Bi is the ability to describe business processes
in a standard form that can be consumed by tools for process implementation
and monitoring. Currently, there are several organizations
that are trying to standardize business process standards for their vertical