Implementation Some triplestores have been built as database engines from scratch, while others have been built on top of existing commercial relational database engines (i.e. SQL-based). Like the ear ...
Graph algorithms are a significant field of interest within computer science. Typical higher-level operations associated with graphs are: finding a path between two nodes, like depth-first search and ...
Graph databases are based on graph theory. Graph databases employ nodes, properties, and edges.Graph databaseNodes represent entities such as people, businesses, accounts, or any other item you might ...
A distributed transaction is an operations bundle, in which two or more network hosts are involved. Usually, hosts provide transactional resources, while the transaction manager is responsible for cre ...
The protocol works in the following manner: one node is designated the coordinator, which is the master site, and the rest of the nodes in the network are designated the cohorts. The protocol assumes ...
Software that provides a link between separate software applications. Middleware is sometimes called plumbing because it connects two applications and passes data between them. Middleware allows data ...
Problems of heterogeneous database integration This article does not contain details of distributed database management systems (sometimes known as federated database systems).Technical heterogeneity ...
McLeod and Heimbigner were among the first to define a federated database system in the mid 1980's.A FDBS is one which "define the architecture and interconnect databases that minimize central authori ...
Implementations Major embedded database products include, in alphabetical order:Advantage Database Server from Sybase Inc.Berkeley DB from Oracle CorporationCSQL from csqlcache.comEffiPRoz from EffiPr ...
A distributed database is a database in which storage devices are not all attached to a common processing unit such as the CPU, controlled by a distributed database management system (together sometim ...
Features, limitations and extensions Adding recursion to the conjunctive queries yields datalog .Unlike in Prolog, statements of a Datalog program can be stated in any order. Furthermore, Datalog quer ...
The use of mathematical logic to represent and execute computer programs is also a feature of the lambda calculus, developed by Alonzo Church in the 1930s. However, the first proposal to use the claus ...
A Deductive database is a database system that can make deductions (i.e., conclude additional facts) based on rules and facts stored in the (deductive) database. Datalog is the language typically used ...
Wireless sensor networks can be used for facilitating the collection of data for spatial data mining for a variety of applications such as air pollution monitoring. A characteristic of such networks i ...
In the 1960s, statisticians used terms like "Data Fishing" or "Data Dredging" to refer to what they considered the bad practice of analyzing data without an a-priori hypothesis. The term "Data Mining ...
