enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Treemapping - Wikipedia

    en.wikipedia.org/wiki/Treemapping

    To create a treemap, one must define a tiling algorithm, that is, a way to divide a region into sub-regions of specified areas.Ideally, a treemap algorithm would create regions that satisfy the following criteria:

  3. Graph Query Language - Wikipedia

    en.wikipedia.org/wiki/Graph_Query_Language

    Prior work by WG3 and SC32 mirror bodies, particularly in INCITS Data Management (formerly INCITS DM32), has helped to define a new planned Part 16 of the SQL Standard, which allows a read-only graph query to be called inside a SQL SELECT statement, matching a graph pattern using syntax which is very close to Cypher, PGQL and G-CORE, and ...

  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. Looker Studio - Wikipedia

    en.wikipedia.org/wiki/Looker_Studio

    Tables in Looker Studio use rows and columns to organize metrics. [16] Tables are utilized to show "granular data, a large number of fields, or multiple metrics with very different units and scales aggregated for one or more dimension fields". [20] There are three ways to utilize tables and pivot table charts in Looker.

  6. Graph database - Wikipedia

    en.wikipedia.org/wiki/Graph_database

    A graph database (GDB) is a database that uses graph structures for semantic queries with nodes, edges, and properties to represent and store data. [1] A key concept of the system is the graph (or edge or relationship).

  7. Hierarchical database model - Wikipedia

    en.wikipedia.org/wiki/Hierarchical_database_model

    Using links, records link to other records, and to other records, forming a tree. An example is a "customer" record that has links to that customer's "orders", which in turn link to "line_items". The hierarchical database model mandates that each child record has only one parent, whereas each parent record can have zero or more child records.

  8. SQL syntax - Wikipedia

    en.wikipedia.org/wiki/SQL_syntax

    SQL includes operators and functions for calculating values on stored values. SQL allows the use of expressions in the select list to project data, as in the following example, which returns a list of books that cost more than 100.00 with an additional sales_tax column containing a sales tax figure calculated at 6% of the price.

  9. Associative entity - Wikipedia

    en.wikipedia.org/wiki/Associative_entity

    An associative (or junction) table maps two or more tables together by referencing the primary keys (PK) of each data table. In effect, it contains a number of foreign keys (FK), each in a many-to-one relationship from the junction table to the individual data tables. The PK of the associative table is typically composed of the FK columns ...