supriyak Archive
The Chain of Responsibility Pattern comes under Behavioral design pattern, the main motive of this pattern is to accomplish loose coupling in Software design process where the client request is passes to series (CHAIN) of objects to
Flyweight pattern comes under Structural Design Patterns. By using this pattern we can decrease object count. When there is a need to create huge amount of similar objects then this Java Flyweight Pattern is useful. Flyweight pattern
Bridge Pattern is one of the structural design patterns. As the name of the pattern is BRIDGE , it divides one class in 2 parts i.e., Abstraction and Implementation and acts as a Bridge between them, so
Prototype pattern comes under creational design pattern. As we know, in Java object creation process is time consuming and costly, so instead of creating object every time we can create copy of existing object. So using this
Triggers are nothing but action / set of actions performed on Tables or Views when Insert / Delete / Update or Truncate queries are executed. What kind of Actions , Table or View Name and on which
Testing team uses Stored Functions very often to test complex functionalities, mainly where lot of calculations are involved. It is easier to use functions for it than writing long query every time. Banking domain is the one
A Stored Procedure can be used like a modular programming where we must create procedure once, store it and call for several times whenever it is needed. Execution time is fast in stored procedures. Procedures reduce network
In simple words, View is a ‘Subset’ of one or multiple tables. A View can be a Virtual Table which contains all OR some of the rows and columns of the given table. To create a View one
Sub Query is nothing but a nested query or we can say query within a query. Frankly speaking, I have not used sub queries that often in my 10 years of career in Testing / QA. But
Builder pattern is one of the Creational design pattern. This pattern uses step by step approach to build a complex object. So we can say this pattern provides easy way to create a complex object. NEED OF
Do you remember signing your class attendance sheet on behalf of your friend (well of course your teacher doesn’t have to know :)). That is called Proxy. It means “in place of” or “on behalf”. The Proxy Pattern comes
Singleton Pattern is one of the Creational design pattern. The singleton pattern puts restriction on object creation process; it restricts the instantiation of a class to one object. If we are using Singleton pattern, no need to
