1. Agrawal D, Bernstein P, Bertino E, Davidson S, Dayal U, Franklin M, Gehrke J, Haas L, Halevy A, Han J, Jagadish HV, Labrinidis A, Madden S, Papakonstantinou Y, Patel JM, Ramakrishnan R, Ross K, Shahabi C, Suciu D, Vaithyanathan S, Widom J (2012) Challenges and opportunities with big data: a community white paper developed by leading researchers across the United States. Computing Research Association, Washington
2. American National Standards Institute (1992) American national standard for information systems: database language SQL (ANSI X3.135-1992). American National Standards Institute, Washington
3. Berglund A, Boag S, Chamberlin D, Fernández MF, Kay M, Robie J, Siméon J (2010) XML path language (XPath) 2.0. World Wide Web Consortium, Cambridge
4. Boag S, Chamberlin D, Fernández MF, Florescu D, Robie J, Siméon J (2011) XQuery 1.0: an XML query language. World Wide Web Consortium, Cambridge
5. Brinkkemper S (1996) Method engineering: engineering of information systems development methods and tools. Information and Software Technology 38(4):275–280