A database is a systematic collection of data. Database systems are used to store, access, delete data. furthermore, it also systematically organize data in a database.This article briefly discuss about the use and importance of SELECT Query in SQL. Consider a cafeteria, which provides snacks and other eatable item to its customers. Traditionally, the snacks, …
Var-arg methods are generally the special methods that can take variable number of arguments during its calling. Such methods finds its application in programming languages to decrease the length of code and increase its re-usability. For example: class Vararg { public static add(int x, int y) //defining a method to add 2 numbers { System.out.println(“Sum …
MySQL, like most networked systems, requires you to log in with a specific user account before doing anything else. This is a fairly obvious security measure, and it limits access to the data by specifying permissions for each account. For example, one user may only have permission to view existing data, whereas another may have permission to add …
PHP- the concept of Inheritance in OOP is the ability to pass the implementation of the class from parents to children. Yes, classes can have parents, and the technical way of referring to this feature is that a class extends from another class. When extending a class, we get all the properties and methods that are not defined …
Access Specifiers in PHP play a very important role in OO(object-oriented) approach to programming. It is a key paradigm in OOP is encapsulation and access protection of object properties (also referred to as member variables). Most common OO languages have three main access restriction keywords: public, protected, and private. When defining a class member in the class …