database

Get All Constraints from database

less than 1 minute read

Queries mentioned below are useful in getting knowledge about all constraints in a database. This is usefull in cases where you have huge database & thus tables Read More ›

architectures · principles

Liskov Substitution Principle

less than 1 minute read

Blog - Java Pathshala Derived classes must be substitutable for their base classes. Read More ›

architectures · design-patterns

Static Class Vs SingleTon Pattern

less than 1 minute read

Blog - Java Pathshala WoW ! Both have their own usage but still investigation is required - which one to use ? Read More ›

architectures · design-patterns

Layer Wise Design Patterns

1 minute read

Blog - Java Pathshala Layered archietctures allows to use different design patterns at different layers. This post descttibes a taxonomy of design pattrens that could/should be used in each layer of architecture. Read More ›

architectures · design-patterns

Chain of Responsibilty

2 minute read

Blog - Java Pathshala Actually bad habit. Throw your Responsibilty to others. Is what this pattern says - NO :). - The Chain of Responsibility is known as a behavioural pattern, as it's used to manage algorithms, relationships and responsibilities between objects. Complete java exception framework is built on *chain of responsibilities* Read More ›