Cosa (chi) è network database - definizione
DATABASE MODEL INVENTED BY CHARLES BACHMAN
Network database; Network data model; Network database model; Network model (database)
network database
<database> A kind of database management system in which
each record type can have multiple owners, e.g. orders are
owned by both customers and products. This contrasts with a
hierarchical database (one owner) or relational database
(no explicit owner).
(1998-10-07)
database
![Basic structure of navigational [[CODASYL]] database model](https://commons.wikimedia.org/wiki/Special:FilePath/CodasylB.png?width=200 "Basic structure of navigational [[CODASYL]] database model")
![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.](https://commons.wikimedia.org/wiki/Special:FilePath/Relational key SVG.svg?width=200 "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
DBMS
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
Wikipedia
Network model
The network model is a database model conceived as a flexible way of representing objects and their relationships. Its distinguishing feature is that the schema, viewed as a graph in which object types are nodes and relationship types are arcs, is not restricted to being a hierarchy or lattice.
The network model was adopted by the CODASYL Data Base Task Group in 1969 and underwent a major update in 1971. It is sometimes known as the CODASYL model for this reason. A number of network database systems became popular on mainframe and minicomputers through the 1970s before being widely replaced by relational databases in the 1980s.
