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Normalization is a design technique that is mostly used as a guide in designing relational databases. Normalization is necessary a two step process that gives data into tabular form by removing repeating groups and then replaces duplicated data from the relational tables.
Redundant data wastes disk space and builds maintenance problems. If data that allows in more than one place must be modified, the data must be modified in exactly the same way in all locations which is prone to errors and time consuming. A modification to a customer address is much simpler to do if that data is stored only in the Customers table and now in the database.
Inconsistent dependency is a database structure that makes certain assumptions about the location of data. As, while it is intuitive for a user to look in the Customers table for the address of a particular client, it may not create sense to look there for the salary of the employee who invokes on that customer. The employee's salary is exist to, or dependent on, the employee and thus could be placed to the Employees table. Inconsistent dependencies can create data difficult to access because the path to find the data cannot be logical, or may be broken or missing.
What is the difference between the Boolean & operator and the && operator? If an expression including the Boolean & operator is evaluated, both operands are evaluated. Then the
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What is Object Oriented Programming explain with an example? In Java everything is an object or a class (or a piece of one or a collection of various). Objects send messages t
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For this assignment, you will simulate a file system. You will be neither creating files nor reading or writing disk files. Rather, you will have a simulation of a file system that
The game of Life, invented by John Conway, is supposed to model the genetic laws for birth, survival, and death (see Scienti_c American, October 1970, p. 120). We will play it on a
A for loop repeats until a specified condition evaluates to false. For for loop the JavaScript is similar to the Java and C for loops. A for statement looks as: for ([initial-
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