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  2. Hierarchical and recursive queries in SQL - Wikipedia

    en.wikipedia.org/wiki/Hierarchical_and_recursive...

    A hierarchical query is a type of SQL query that handles hierarchical model data. They are special cases of more general recursive fixpoint queries, which compute transitive closures . In standard SQL:1999 hierarchical queries are implemented by way of recursive common table expressions (CTEs).

  3. Waste minimisation - Wikipedia

    en.wikipedia.org/wiki/Waste_minimisation

    Waste hierarchy. Refusing, reducing, reusing, recycling and composting allow to reduce waste. Waste minimisation is a set of processes and practices intended to reduce the amount of waste produced. By reducing or eliminating the generation of harmful and persistent wastes, waste minimisation supports efforts to promote a more sustainable ...

  4. Nested set model - Wikipedia

    en.wikipedia.org/wiki/Nested_set_model

    The nested set model is a technique for representing nested set collections (also known as trees or hierarchies) in relational databases.. It is based on Nested Intervals, that "are immune to hierarchy reorganization problem, and allow answering ancestor path hierarchical queries algorithmically — without accessing the stored hierarchy relation".

  5. Waste hierarchy - Wikipedia

    en.wikipedia.org/wiki/Waste_hierarchy

    The waste management hierarchy indicates an order of preference for action to reduce and manage waste, and is usually presented diagrammatically in the form of a pyramid. [3] The hierarchy captures the progression of a material or product through successive stages of waste management , and represents the latter part of the life-cycle for each ...

  6. Category:Waste management concepts - Wikipedia

    en.wikipedia.org/wiki/Category:Waste_management...

    Waste hierarchy; Waste minimisation; Z. Zero waste This page was last edited on 23 May 2021, at 22:33 (UTC). Text is available under the Creative Commons ...

  7. Zero waste - Wikipedia

    en.wikipedia.org/wiki/Zero_waste

    Zero waste, or waste minimization, is a set of principles focused on waste prevention that encourages redesigning resource life cycles so that all products are repurposed (i.e. "up-cycled") and/or reused. The goal of the movement is to avoid sending trash to landfills, incinerators, oceans, or any other part of the environment.

  8. Isko Dives Deep Into ‘Waste Hierarchy,’ R-Two Technology

    www.aol.com/lifestyle/isko-dives-deep-waste...

    “Waste hierarchy” is a subjective term — but for Turkey-based denim ingredient brand Isko, its approach to waste is to use less, and use better. That means the company taps into resources ...

  9. Waste management - Wikipedia

    en.wikipedia.org/wiki/Waste_management

    The waste hierarchy is the bedrock of most waste minimization strategies. The aim of the waste hierarchy is to extract the maximum practical benefits from products and to generate the minimum amount of end waste; see: resource recovery. [16] [17] The waste hierarchy is represented as a pyramid because the basic premise is that policies should ...