Major components of the ODMG 3.0 specificationObject Model. This was based on the Object Management Group's Object Model. The OMG core model was designed to be a common denominator for object request ...
General rulesThe following rules apply to OQL statements:All complete statements must be terminated by a semi-colon.A list of entries in OQL is usually separated by commas but not terminated by a comm ...
The three official languages of the ISO are English, French, and Russian. As its name would have different abbreviations in different languages ("IOS" is English, "OIN" in French, etc.), the organizat ...
ANSI was originally formed in 1918, when five engineering societies and three government agencies founded the American Engineering Standards Committee (AESC). In 1928, the AESC became the American Sta ...
Codd produced these rules as part of a personal campaign to prevent his vision of the relational database being diluted, as database vendors scrambled in the early 1980s to repackage existing products ...
A data manipulation language (DML) is a family of syntax elements similar to a computer programming language used for selecting, inserting, deleting and updating data in a database. Performing read-on ...
The data definition language concept and name was first introduced in relation to the Codasyl database model, where the schema of the database was written in a language syntax describing the records, ...
The term in practiceFrom the corporate objective, employees have been traditionally viewed as assets to the enterprise, whose value is enhanced by further learning and development, referred to as huma ...
In any database management system following the relational model, a view is a virtual table representing the result of a database query. Whenever a query or an update addresses an ordinary view's virt ...
Bitmap indexMain article: Bitmap indexA bitmap index is a special kind of index that stores the bulk of its data as bit arrays (bitmaps) and answers most queries by performing bitwise logical operatio ...
Named graphs and HTTPOne conceptualization of the Web is as a graph of document nodes identified with URIs and connected by hyperlink arcs which are expressed within the HTML documents. By doing a HTT ...
Rationale for XML in databasesO'Connell gives one reason for the use of XML in databases: the increasingly common use of XML for data transport, which has meant that "data is extracted from databases ...
The logical data structure of a database management system (DBMS), whether hierarchical, network, or relational, cannot totally satisfy the requirements for a conceptual definition of data, because it ...
Don Nelson designed the MultiValue data model in the early to mid-1960s. Dick Pick, a developer at TRW, worked on the first implementation of this model for the US Army in 1965. Pick considered the so ...
Multidimensional structure is defined as “a variation of the relational model that uses multidimensional structures to organize data and express the relationships between data”. The structure is bro ...
