Techniques to model business process such as the flow chart, functional flow block diagram, control flow diagram, Gantt chart, PERT diagram, and IDEF have emerged since the beginning of the 20th centu ...
The Unified Modeling Language (UML) offers a way to visualize a system's architectural blueprints in a diagram (see image), including elements such as:Any activities (jobs)Individual components of the ...
A conceptual schema or conceptual data model is a map of concepts and their relationships used for databases. This describes the semantics of an organization and represents a series of assertions abou ...
Main article: Database designThe first task of a database designer is to produce a conceptual data model that reflects the structure of the information to be held in the database. A common approach to ...
Issues with terminology The term is imprecise for several reasons:Structure, while not formally defined, can still be implied.Data with some form of structure may still be characterized as unstructure ...
Object-oriented database management systems (OODBMSs) combine database capabilities with object-oriented programming language capabilities. OODBMSs allow object-oriented programmers to develop the pro ...
A terminology-oriented database or terminology-oriented database management system is a conceptual extension of an object-oriented database. It implements concepts defined in a terminology model. Comp ...
Temporal databases support managing and accessing temporal data by providing one or more of the following features:A time period datatype, including the ability to represent time periods with no end ( ...
Database systems use indexes to quickly look up values and the way that most databases index data is not optimal for spatial queries. Instead, spatial databases use a spatial index to speed up databas ...
Real-time databases are traditional databases that use an extension to give the additional power to yield reliable responses. They use timing constraints that represent a certain range of values for w ...
Classical logic only permits propositions having a value of truth or falsity. The notion of whether 1+1=2 is an absolute, immutable, mathematical truth. However, there exist certain propositions with ...
In a probabilistic database, each data item - relation, tuple and value that an attribute can take - is associated with a probability ∈ (0,1], with 0 representing that the data is certainly incorrect ...
A shared nothing architecture (SN) is a distributed computing architecture in which each node is independent and self-sufficient, and there is no single point of contention across the system. More spe ...
In computer hardware, shared memory refers to a (typically large) block of random access memory (RAM) that can be accessed by several different central processing units (CPUs) in a multiple-processor ...
The motherboard is the main component of computer. It is a large rectangular board with integrated circuitry that connects the other parts of the computer including the CPU, the RAM, the disk drives(C ...
