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- a finite set S of N states
- a special start state
- a set of final (or accepting) states
- a set of transitions T from one state to another, labeled with chars in C
n Finite Automata transitions are marked with single letter of alphabet. In Transition Graph, they can be marked with letters or strings (combination of letters).
In Finite Automata states transition are shown for all letters of given alphabet. In Transition Graph, it does not necessarily shows transition for all letters.
Strings transitions can be showed with TGs but impossible with FAs.
In GTG transition edges are labelled about RE but in TG edges are labeled with strings.
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Functional dependency is a relationship that exists when one attribute uniquely determines another attribute.
If R is a relation with attributes X and Y, a functional dependency between the attributes is represented as X->Y, which specifies Y is functionally dependent on X. Here X is a determinant set and Y is a dependent attribute. Each value of X is associated precisely with one Y value.
Functional dependency in a database serves as a constraint between two sets of attributes. Defining functional dependency is an important part of relational database design and contributes to aspect normalization.
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A finite automaton (FA) is a simple idealized machine used to recognize patterns within input taken from some character set (or alphabet) C. The job of an FA is to accept or reject an input depending on whether the pattern defined by the FA occurs in the input.
A finite automaton consists of:
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