What is a functional addiction?
As an important part in the normalization of the database, database or functional dependence is a situation where the value allows smooth transition to the next value in the sequence without any type of interruption. If this type of situation exists, the flow of information in the database takes place without any type of delay or problems and the integrity of the data itself is maintained. Functional dependence is essential in creating and operating relational databases, as the process involves easy connection with one value or type of data with other relevant values.
One of the simplest ways to understand how functional dependence works is to consider using a government identification number, such as the social security number, which is commonly issued to any citizen of the United States. Using this number as a means of identification, it is possible to do this by employers had access to information about the holder of this number; Potential creditors and moreThe creditors can use the number to access the applicant's relevant financial information, and this number allows you to access information such as evaluated and paid taxes, the level of income from one year to another and calculate the government of the supported pension benefits that the individual eventually enjoyed after leaving the workforce. In many cases, employers can actually use the same number as the employee's primary identification number or some part of the number as a relational tool for accessing the rest of the electronic file.
As part of the range of development and operation of the database, functional dependence is used to allow users to enter a certain value that can be used to load the required information. For example, the seller can enter the company name value to obtain all records associated with Associated contacts with a company customer. Similarly, a seller who plans a sales trip can enter the name of the city as a value as a means of accessing names and contactInformation of all customers located near his goal, which makes it easier to organize meetings with these clients.
While the exact structure of how the system provides functional dependence may vary depending on the application involved, the end result is still the same. One value is related to another, allowing access to the necessary information with relative ease. With so many records kept in databases rather than rely on the older method of printed files, this type of relational dependence is very important for locating and using relevant data.