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Making a fool of myself in 5 minutes or less

Making a fool of myself in 5 minutes or less. Daniela Florescu Oracle Corp. BEA Systems XQRL Propel Crossgain INRIA. (Approximate) citations. “XQuery and the other W3C standards are too complicated. It’s impossible to work with them” Surajit Chaudhuri, Raghu Ramakrishnan, Gerhard Weikum

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Making a fool of myself in 5 minutes or less

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  1. Making a fool of myself in 5 minutes or less Daniela Florescu Oracle Corp. BEA Systems XQRL Propel Crossgain INRIA

  2. (Approximate) citations • “XQuery and the other W3C standards are too complicated. It’s impossible to work with them” • Surajit Chaudhuri, Raghu Ramakrishnan, Gerhard Weikum • “Relational databases have a query language, XML no” • Pat Helland • “XQuery is too complicated” • Dave DeWitt • “XQuery failed” • Michael Stonebraker Why do you all look at me ?

  3. Coming out of the closet • I don’t like XML… • I hate namespaces… • I never managed to finish reading certain sections of XML Schema… • I don’t even like XQuery … • But: • Don’t get me started on technologies that I don’t like • I am not crazy enoughto believe thatthe world cares about what I like (or not)

  4. The reality • “It’s a historical necessity !” • Lenin about the communism • Me about XML • XML := the name of a community of people that have lots of information (I.e. stuff that can be written down digitally) and don’t know what to do with it.

  5. But still. • Give it a try… • If your head hurts, send email to • Don Chamberlin, • Mary Fernandez, • Jerome Simeon, • Michael Rys, • Michael Kay, • Phil Wadler, • Many, many others and they’ll bring you tea, and hold your hand in those difficult moments • Don’t get stuck with the ugly details, just look at what one can do with it ! You will be amazed.

  6. The database field ” “a collection of models, tools and algorithms for data management that guarantee scalability” • Small editing corrections: “a collection of models, tools and algorithms for datamanagement that guarantee scalability In an ever changing environment” Change:data To: information Change:Mb -> Gb -> Tb To:scale to the level of the Web # of data feeds # of data models # of physical locations # of users Change: store, put, get To: management through the entire lifetime of the information One principle is indispensable for this goal declarativity

  7. Declarativity and the real world • “Dissociate the logic of the processing from how and where the information is actually processed.” • My personal reality checks: • http://lists.xml.org/archives/xml-dev/200412/threads.html • More then 150 answers in 2 days “Declarative systems don’t work. Programmers know better how to do memory allocation and parallelization by hand. They don’t buy your stuff.” X.Y@Z.com • We take declarativity for granted, and this might be a mistake.

  8. What does XQuery has to do with this ? • Perfect or not, XQuery has an important role to play in the IT ecosystem Brings declarativity in information processing. • Is only a first and timid step in this direction. • If we miss this train, the next opportunity for declarativity in information processing will be in 15-20 years.

  9. My “outrageous” claim • In 15-20 years from now: • Information will stay only in XML (no more tuples, no more objects) • Imperative languages as we know them today (Java, C, C++, C#) will be gone • We will program with some extension of XQuery, or in any case a declarative dataflow/workflow language specially designed for XML processing and SOA. • The sooner we go there the better.

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