Data model

structured datastructuredData modelsData model diagramModeldata formatinformation modelsmodelingmodelsstructured and unstructured data
A data model (or datamodel ) is an abstract model that organizes elements of data and standardizes how they relate to one another and to the properties of real-world entities.wikipedia
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Data modeling

data modellingmodelingmodeled
Data models are specified in a data modeling notation, which is often graphical in form.
Data modeling in software engineering is the process of creating a data model for an information system by applying certain formal techniques.

Unstructured data

unstructuredunstructured text(unstructured)
Managing large quantities of structured and unstructured data is a primary function of information systems.
Unstructured data (or unstructured information) is information that either does not have a pre-defined data model or is not organized in a pre-defined manner.

Enterprise modelling

enterprise modelingenterprise modelbusiness processes
Data models are often complemented by function models, especially in the context of enterprise models.
Enterprise modelling is the process of building models of whole or part of an enterprise with process models, data models, resource models and or new ontologies etc. It is based on knowledge about the enterprise, previous models and/or reference models as well as domain ontologies using model representation languages.

Programming language

programming languageslanguagedialect
A data model can sometimes be referred to as a data structure, especially in the context of programming languages.
Markup languages like XML, HTML, or troff, which define structured data, are not usually considered programming languages.

Logical schema

logical data modelschemadatabase schema
Such a design can be detailed into a logical data model.
A logical data model or logical schema is a data model of a specific problem domain expressed independently of a particular database management product or storage technology (physical data model) but in terms of data structures such as relational tables and columns, object-oriented classes, or XML tags.

Hierarchical database model

hierarchical modelhierarchical databasehierarchical
According to Leondes (2002), "during that time, the information system provided the data and information for management purposes. The first generation database system, called Integrated Data Store (IDS), was designed by Charles Bachman at General Electric. Two famous database models, the network data model and the hierarchical data model, were proposed during this period of time".
A hierarchical database model is a data model in which the data are organized into a tree-like structure.

Object-relational database

object-relationalobject-relational database management systemobject extensions
In addition, just as with pure relational systems, it supports extension of the data model with custom data types and methods.

Data structure

data structuresstructurestructures
A data model can sometimes be referred to as a data structure, especially in the context of programming languages.

Semantic data model

semantic data modelingdata semanticssemantic knowledge extraction
An entity-relationship model (ERM), sometimes referred to as an entity-relationship diagram (ERD), could be used to represent an abstract conceptual data model (or semantic data model or physical data model) used in software engineering to represent structured data.

Diagram

diagramsdiagrammatic formdiagrammatic
A data structure diagram (DSD) is a diagram and data model used to describe conceptual data models by providing graphical notations which document entities and their relationships, and the constraints that bind them.

Tuple relational calculus

tuple calculus
For example, in the relational model, the structural part is based on a modified concept of the mathematical relation; the integrity part is expressed in first-order logic and the manipulation part is expressed using the relational algebra, tuple calculus and domain calculus.
Tuple calculus is a calculus that was created and introduced by Edgar F. Codd as part of the relational model, in order to provide a declarative database-query language for data manipulation in this data model.

G. M. Nijssen

G.M. NijssenSjir NijssenDr G. M. Nijssen
In the 1970s G.M. Nijssen developed "Natural Language Information Analysis Method" (NIAM) method, and developed this in the 1980s in cooperation with Terry Halpin into Object-Role Modeling (ORM).
:"While the "great debate" in 1974 between proponents of the CODASYL Network Model (C. W. Bachman) and of the Relational Model (Dr E. F. Codd) was the focus of attention in database research world, it was Prof. Falkenberg who said that: The debate is irrelevant for semantic data modeling. Now, years later, the debate on semantic data modeling is indeed concerned with issues quite different from those emphasised in the conventional data models."

Database model

data design modeldatabasedata model
A database model is a type of data model that determines the logical structure of a database and fundamentally determines in which manner data can be stored, organized and manipulated.

Facility information model

facility information
More in general the term information model is used for models of individual things, such as facilities, buildings, process plants, etc. In those cases the concept is specialised to Facility Information Model, Building Information Model, Plant Information Model, etc. Such an information model is an integration of a model of the facility with the data and documents about the facility.
A Facility Information Model can be an instantiation of a fixed data model or it can be expressed in a flexible modeling language such as Gellish English.

System context diagram

Context diagramContext diagramscontext-level data-flow diagram
It is common practice to draw a context-level data-flow diagram first which shows the interaction between the system and outside entities.

Systems analysis

analysissystems analystSystem analysis
Object-Role Modeling is a fact-oriented method for performing systems analysis at the conceptual level.
This helps produce the data model, a precursor to creating or enhancing a database.

Three-schema approach

Three schema approachconceptual view3-schema architecture
Therefore, the need to define data from a conceptual view has led to the development of semantic data modeling techniques.

Database

database management systemdatabasesDBMS
According to Leondes (2002), "during that time, the information system provided the data and information for management purposes. The first generation database system, called Integrated Data Store (IDS), was designed by Charles Bachman at General Electric. Two famous database models, the network data model and the hierarchical data model, were proposed during this period of time".
Notable research topics have included models, the atomic transaction concept, and related concurrency control techniques, query languages and query optimization methods, RAID, and more.

Function model

functional modelfunctionalfunction modeling
Data models are often complemented by function models, especially in the context of enterprise models.

Data

statistical datascientific datadatum
A data model (or datamodel ) is an abstract model that organizes elements of data and standardizes how they relate to one another and to the properties of real-world entities.

Information system

information systemscomputer information systemssystems
Managing large quantities of structured and unstructured data is a primary function of information systems.

Word processor

word processingword processing softwareword processors
They typically do not describe unstructured data, such as word processing documents, email messages, pictures, digital audio, and video.

Email

e-mailelectronic maile-mails
They typically do not describe unstructured data, such as word processing documents, email messages, pictures, digital audio, and video.

Physical schema

physical data model.pdmPhysical architecture
In later stages, this model may be translated into physical data model.