Constraint may refer to:
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Constraint (computer-aided design)
A constraint in computer-aided design (CAD) software is a limitation or restriction imposed by a designer or an engineer upon geometric properties of an entity of a design model that maintains its structure as the model is manipulated. These prop ...
, a demarcation of geometrical characteristics between two or more entities or solid modeling bodies
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Constraint (mathematics)
In mathematics, a constraint is a condition of an optimization problem that the solution must satisfy. There are several types of constraints—primarily equality constraints, inequality constraints, and integer constraints. The set of can ...
, a condition of an optimization problem that the solution must satisfy
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Constraint (classical mechanics)
In classical mechanics, a constraint on a system is a parameter that the system must obey. For example, a box sliding down a slope must remain on the slope. There are two different types of constraints: holonomic and non-holonomic.
Types of co ...
, a relation between coordinates and momenta
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Constraint (information theory) Constraint in information theory is the degree of statistical dependence between or among variables.
Garner Garner W R (1962). ''Uncertainty and Structure as Psychological Concepts'', John Wiley & Sons, New York. provides a thorough discussion of v ...
, the degree of statistical dependence between or among variables
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''Constraints'' (journal), a scientific journal
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Constraint (database)
A relational database is a (most commonly digital) database based on the relational model of data, as proposed by E. F. Codd in 1970. A system used to maintain relational databases is a relational database management system (RDBMS). Many relati ...
, a concept in relational database
See also
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Biological constraints Biological constraints are factors which make populations resistant to evolutionary change. One proposed definition of constraint is "A property of a trait that, although possibly adaptive in the environment in which it originally evolved, acts to p ...
, factors which make populations resistant to evolutionary change
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Carrier's constraint
Carrier's constraint is the observation that air-breathing vertebrates which have two lungs and flex their bodies sideways during locomotion find it very difficult to move and breathe at the same time, because the sideways flexing expands one lung ...
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Constrained optimization
In mathematical optimization, constrained optimization (in some contexts called constraint optimization) is the process of optimizing an objective function with respect to some variables in the presence of constraints on those variables. The obj ...
, in finance, linear programming, economics and cost modeling
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Constrained writing
Constrained writing is a literary technique in which the writer is bound by some condition that forbids certain things or imposes a pattern.
Constraints are very common in poetry, which often requires the writer to use a particular verse form.
D ...
, in literature
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Constraint algorithm
In computational chemistry, a constraint algorithm is a method for satisfying the Newtonian motion of a rigid body which consists of mass points. A restraint algorithm is used to ensure that the distance between mass points is maintained. The gene ...
, such as SHAKE, or LINCS
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Constraint satisfaction In artificial intelligence and operations research, constraint satisfaction is the process of finding a solution through
a set of constraints that impose conditions that the variables must satisfy. A solution is therefore a set of values for th ...
, in computer science
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Finite domain constraint
Constraint logic programming is a form of constraint programming, in which logic programming is extended to include concepts from constraint satisfaction. A constraint logic program is a logic program that contains constraints in the body of clau ...
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First class constraint
A first class constraint is a dynamical quantity in a constrained Hamiltonian system whose Poisson bracket with all the other constraints vanishes on the constraint surface in phase space (the surface implicitly defined by the simultaneous vanis ...
in Hamiltonian mechanics
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Integrity constraints
Data integrity is the maintenance of, and the assurance of, data accuracy and consistency over its entire life-cycle and is a critical aspect to the design, implementation, and usage of any system that stores, processes, or retrieves data. The ter ...
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Loading gauge
A loading gauge is a diagram or physical structure that defines the maximum height and width dimensions in railway vehicles and their loads. Their purpose is to ensure that rail vehicles can pass safely through tunnels and under bridges, and ke ...
, a constraint in engineering
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Optimality theory
In linguistics, Optimality Theory (frequently abbreviated OT) is a linguistic model proposing that the observed forms of language arise from the optimal satisfaction of conflicting constraints. OT differs from other approaches to phonological ...
, in linguistics, a constraint-based theory which is primarily influential in phonology
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Primary constraint
In Hamiltonian mechanics, a primary constraint is a relation between the coordinates and momenta that holds without using the equations of motion. A secondary constraint is one that is not primary—in other words it holds when the equations o ...
in Hamiltonian mechanics
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Restraint (disambiguation)
Restraint may refer to:
A form of control
* Restraint, or self-control, a personal virtue
* Medical restraint, form of general physical restraint used for medical purposes
* Physical restraint, the practice of rendering people helpless or keeping ...
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Second class constraint
A first class constraint is a dynamical quantity in a constrained Hamiltonian system whose Poisson bracket with all the other constraints vanishes on the constraint surface in phase space (the surface implicitly defined by the simultaneous vanishi ...
in Hamiltonian mechanics
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Secondary constraint
In Hamiltonian mechanics, a primary constraint is a relation between the coordinates and momenta that holds without using the equations of motion. A secondary constraint is one that is not primary—in other words it holds when the equations ...
in Hamiltonian mechanics
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Structure gauge
A structure gauge, also called the minimum clearance outline, is a diagram or physical structure that sets limits to the extent that bridges, tunnels and other infrastructure can encroach on rail vehicles. It specifies the height and width of pl ...
, a constraint in engineering
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Theory of constraints, in business management
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