Subject: Re: [ubl] Groups - unvalidated-code-lists.zzz uploaded
In looking at unvalidated code lists, one thing I didn't mention is that both MDDL and FpML (both financial MLs) use unvalidated code lists. They both use the (FpML) 'scheme' construct. As an example, in an MDDL document you would see things like <code scheme="http://www.example.com/code-list-X">XXX</code> where the 'scheme' attribute is a URI which uniquely identifies the code list from which the code is taken. No attempt is made to provide code list validation within the MDDL Schema. The advantage of this approach is that it allows users, within their instance documents, to specify which code list they are using. If the 'scheme' is not provided, it (usually) defaults to a URI which identifies the most commonly used code list for that code. The disadvantage is that, to date, neither FpML nor MDDL provide a solution for users that implements a second stage validation to check the code lists, so it is an "exercise for the user". Cheers, Tony. -- Anthony B. Coates London Market Systems Limited 33 Throgmorton Street, London, EC2N 2BR, UK http://www.londonmarketsystems.com/ mailto:firstname.lastname@example.org Mobile/Cell: +44 (79) 0543 9026 [MDDL Editor (Market Data Definition Language), http://www.mddl.org/] [FpML Arch WG Member (Financial Products Markup Language), http://www.fpml.org/] ----------------------------------------------------------------------- This Email may contain confidential information and/or copyright material and is intended for the use of the addressee only. Any unauthorised use may be unlawful. If you receive this Email by mistake please advise the sender immediately by using the reply facility in your e-mail software. Email is not a secure method of communication and London Market Systems Limited cannot accept responsibility for the accuracy or completeness of this message or any attachment(s). Please examine this email for virus infection, for which London Market Systems Limited accepts no responsibility. If verification of this email is sought then please request a hard copy. Unless otherwise stated any views or opinions presented are solely those of the author and do not represent those of London Market Systems Limited.