Search results
Results from the WOW.Com Content Network
The philosophy of REA draws on the idea of reusable Design Patterns, though REA patterns are used to describe databases rather than object-oriented programs, and are quite different from the 23 canonical patterns in the original designs pattern book by Gamma et al. Research in REA emphasizes patterns (e.g., Hruby et al. 2006). Here is an ...
Conversely, PostgreSQL has applied more of the specification implementing cross-table, cross-schema, and then left room for future cross-database functionality. MySQL aliases schema with database behind the scenes, such that CREATE SCHEMA and CREATE DATABASE are analogs. It can therefore be said that MySQL has implemented cross-database ...
The primary keys within a database are used to define the relationships among the tables. When a PK migrates to another table, it becomes a foreign key (FK) in the other table. When each cell can contain only one value and the PK migrates into a regular entity table, this design pattern can represent either a one-to-one or one-to-many relationship.
Example of QBE query with joins, designed in Borland's Paradox database. Query by Example (QBE) is a database query language for relational databases.It was devised by Moshé M. Zloof at IBM Research during the mid-1970s, in parallel to the development of SQL. [1]
Normalization is a database design technique, which is used to design a relational database table up to higher normal form. [9] The process is progressive, and a higher level of database normalization cannot be achieved unless the previous levels have been satisfied.
An entity–attribute–value model (EAV) is a data model optimized for the space-efficient storage of sparse—or ad-hoc—property or data values, intended for situations where runtime usage patterns are arbitrary, subject to user variation, or otherwise unforeseeable using a fixed design. The use-case targets applications which offer a large ...
BibTexML, Biomail, Inspec, JSTOR, MSBib, PDF widh XMP annotations, REPEC (NEP), SilverPlatter, SixPack: KBibTeX Yes No No Yes No No Depends [d] No Yes Yes No None Mendeley Yes No No Yes No No No No No Yes No Browser bookmarks Paperpile Yes No No Yes Yes Yes No No Yes Yes No PDF, MARC Papers Yes No No Yes No No No No Yes Yes No PDF Pybliographer ...
An architectural pattern often uses the same description as a general, reusable solution to a commonly occurring problem in software architecture within a given context. The separation of what is architectural and what is design is not commonly agreed, nor are the patterns catalogued in any accepted form.