database query language การใช้

• XQuery was primarily conceived as a database query language in the tradition of SQL.
• Comprehensions were proposed as a query notation for databases and were implemented in the " Kleisli " database query language.
• The model's linguistic aspect described above is utilized in the declarative database query language ERROL, which mimics natural language constructs.
• Ludwigs, I know SQL is a database query language but I have no idea what to do with your answer " you might look at mySQL ".
• Some logical programming languages, such as Prolog, and database query languages, such as SQL, while declarative in principle, also support a procedural style of programming.
• For example, just as SQL provide an efficient and flexible database query language for enterprise applications, OSGP provides an efficient and flexible query language for smart grid devices.
• Common declarative languages include those of database query languages ( e . g ., SQL, XQuery ), regular expressions, logic programming, functional programming, and configuration management systems.
• The absence of these facilities from XQuery 1.0 was a deliberate design decision : it has the consequence that XQuery is very amenable to static analysis, which is essential to achieve the level of optimization needed in database query languages.
• This has led to more powerful constructs being added to database query languages, such as recursive WITH in SQL : 1999 . More expressive logics, like fixpoint logics, have therefore been studied in finite model theory because of their relevance to database theory and applications.
• Don Chamberlin, database pioneer, creator of SQL . In announcing Chamberlin's award, Dr . Dobb's editor Jonathan Erickson praised the programmer not only for creating the database query language SQL, but for the document editor and formatter Quill, and for devising the XML query language Quilt, which is the basis of XQuery.
• Increasingly, however, XSLT processors use optimization techniques found in functional programming languages and database query languages, such as static rewriting of an expression tree ( e . g ., to move calculations out of loops ), and lazy pipelined evaluation to reduce the memory footprint of intermediate results ( and allow " early exit " when the processor can evaluate an expression such as following-sibling : : * [ 1 ] without a complete evaluation of all subexpressions ).