functional database - significado y definición. Qué es functional database
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Qué (quién) es functional database - definición

BRANCH OF ECOLOGY
Functional Ecology; Functional traits; Functional trait
  • Bees serve the ecological function of pollinating flowers, maintaining flora reproduction and density in the ecosystem.

functional database      
<database, language> A database which uses a {functional language} as its query language. Databases would seem to be an inappropriate application for functional languages since, a purely functional language would have to return a new copy of the entire database every time (part of) it was updated. To be practically scalable, the update mechanism must clearly be destructive rather than functional; however it is quite feasible for the {query language} to be purely functional so long as the database is considered as an argument. One approach to the update problem would use a monad to encapsulate database access and ensure it was {single threaded}. Alternative approaches have been suggested by Trinder, who suggests non-destructive updating with shared data structures, and Sutton who uses a variant of a Phil Wadler's linear type system. There are two main classes of functional database languages. The first is based upon Backus' FP language, of which FQL is probably the best known example. Adaplan is a more recent language which falls into this category. More recently, people have been working on languages which are syntactically very similar to modern {functional programming languages}, but which also provide all of the features of a database language, e.g. bulk data structures which can be incrementally updated, type systems which can be incrementally updated, and all data persisting in a database. Examples are PFL [Poulovassilis&Small, VLDB-91], and Machiavelli [Ohori et al, ACM SIGMOD Conference, 1998]. Query optimisation is very important for database languages in general and the referential transparency of functional languages allows optimisations which would be harder to verify in presence of side-effects. [Trinder, P., "Referentially transparent database languages", 1989 Glasgow Workshop on Functional programming] [Breazu-Tannen et al., DBPL-91]. [Poulovassilis, VLDB-94]. (1995-05-09)
Functional database model         
  • Example of cubes interconnected through formulas
TECHNIQUE IN BUSINESS AND FINANCIAL PLANNING
Functional Database Model
The functional database model is used to support analytics applications such as financial planning and performance management. The functional database model, or the functional model for short, is different from but complementary to the relational model.
database         
  • Basic structure of navigational [[CODASYL]] database model
  • Collage of five types of database models
  • thumb
  • In the [[relational model]], records are "linked" using virtual keys not stored in the database but defined as needed between the data contained in the records.
ORGANIZED COLLECTION OF DATA IN COMPUTING
Database management system; DBMS; Database/Applications; Database system; List of database servers; List of Database Servers; Data base; Database software; Databases; Distributed data base; Database language; Dbms; Database Management System; Database management systems; Database systems; Data Base; Database instance; Distributed database management system; DDBMS; Distributed Database Management System; Data base management system; Database manager; Computer database; Database programming; Database development; Replication transparency; Forensic database; Db management; Database Management; Data bases; Database management software; Database System; Relation-valued attribute; Information Principle; Database Manager; Query Processing; Database query; Public database; D-base; DBMSs; Enterprise database management; Database management program; Database information system; Database management; Computer Databases; DB file; Types of DBMS; Database queries; Data-base; Scientific database; Research database; Numeric database; General-purpose DBMS; Distributed databases; DataBase; Database backend; Electronic data processing database; Public databases; History of database systems; Static analysis of query languages; Database (computing); Database languages
also data base (databases)
A database is a collection of data that is stored in a computer and that can easily be used and added to.
They maintain a database of hotels that cater for businesswomen.
N-COUNT

Wikipedia

Functional ecology

Functional ecology is a branch of ecology that focuses on the roles, or functions, that species play in the community or ecosystem in which they occur. In this approach, physiological, anatomical, and life history characteristics of the species are emphasized. The term "function" is used to emphasize certain physiological processes rather than discrete properties, describe an organism's role in a trophic system, or illustrate the effects of natural selective processes on an organism. This sub-discipline of ecology represents the crossroads between ecological patterns and the processes and mechanisms that underlie them. It focuses on traits represented in large number of species and can be measured in two ways – the first being screening, which involves measuring a trait across a number of species, and the second being empiricism, which provides quantitative relationships for the traits measured in screening. Functional ecology often emphasizes an integrative approach, using organism traits and activities to understand community dynamics and ecosystem processes, particularly in response to the rapid global changes occurring in earth's environment.

Functional ecology sits at the nexus of several disparate disciplines and serves as the unifying principle between evolutionary ecology, evolutionary biology, genetics and genomics, and traditional ecological studies. It explores such areas as "[species'] competitive abilities, patterns of species co-occurrence, community assembly, and the role of different traits on ecosystem functioning".