Search results
Results from the WOW.Com Content Network
The terms data dictionary and data repository indicate a more general software utility than a catalogue. A catalogue is closely coupled with the DBMS software. It provides the information stored in it to the user and the DBA, but it is mainly accessed by the various software modules of the DBMS itself, such as DDL and DML compilers, the query optimiser, the transaction processor, report ...
Data Components. The fundamental building block of NIEM is the data component. Data components are the basic business data elements that represent real-world objects and concepts. Information exchanged between agencies can be broken down into individual components – for example, information about people, places, material things, and events.
This is an accepted version of this page This is the latest accepted revision, reviewed on 13 November 2024. Portable Document Format, a digital file format For other uses, see PDF (disambiguation). Portable Document Format Adobe PDF icon Filename extension.pdf Internet media type application/pdf, application/x-pdf application/x-bzpdf application/x-gzpdf Type code PDF (including a single ...
A database generally stores its schema in a data dictionary. Although a schema is defined in text database language, the term is often used to refer to a graphical depiction of the database structure. In other words, schema is the structure of the database that defines the objects in the database.
A data dictionary document also may include further information describing how data elements are encoded. One of the advantages of well-designed data dictionary documentation is that it helps to establish consistency throughout a complex database, or across a large collection of federated databases .
An industry standard data model, or simply standard data model, is a data model that is widely used in a particular industry. The use of standard data models makes the exchange of information easier and faster because it allows heterogeneous organizations to share an agreed vocabulary, semantics, format, and quality standard for data.
The PREMIS data model consists of four interrelated entities: Object (divided into three subtypes) Event; Agent; Rights; With each semantic unit in the data dictionary categorized in one of these areas. [11] An Intellectual Object entity is a type of Object. It is a set of content that constitutes a discrete, coherent intellectual unit, such as ...
A data definition specification requires data definitions to be: Atomic – singular, describing only one concept. Commonly used and ambiguous terms should be defined. [2] While a term refers to one concept, several words may be used in a term: File – A concept identifiable with one word; File extension – A concept identifiable with more ...