{"product_id":"xml-integration-into-an-sql-based-cep-engine-von-martin-prodanov","title":"XML Integration into an SQL-based CEP Engine","description":"\u003cp\u003eIn order to address the lack of XML support in Complex Event Processing (CEP) systems, we propose an approach for XML integration into a CEP engine we call EQL\/XA (XML-aware event query language). As event query languages are generally SQL-based, our approach is based on the independent part of the SQL standard ¿ XML-related Specifications (SQL\/XML). EQL\/XA consists of several concepts that together offer significant XML support. We introduce a data type for representing XML, an XQuery function that is able to query and construct XML data, an aggregate function that concatenates a group of XML values into a single value and last but not least, we have proposed two stream-to-stream operators that together are capable of flattening XML events into events containing only atomic EQL data types. Thus, we have significantly enhanced the expressiveness of pure EQL.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783639790405\"\u003e\u003ch3\u003e\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Softcover - 9783639790405","offer_id":39440659447901,"sku":"9783639790405","price":54.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/0af1a909-4025-4b91-88d0-e5156fb9eeed.jpg?v=1773294439","url":"https:\/\/shop.autorenwelt.de\/en\/products\/xml-integration-into-an-sql-based-cep-engine-von-martin-prodanov","provider":"Autorenwelt Shop","version":"1.0","type":"link"}