Programming & Design
Varchar and Varchar2
 Varchar and Varchar2 are two data-types in Oracle. They are used to store strings. Varchar2 can store a variable- length character string with an upper limit of 4000 bytes. Varchar is same as Varchar2. However... |
Inner Join vs Outer Join
 Joins in SQL are performed to combine the data of two different tables. An Inner Join is a condition, that results the rows, which satisfy the ‘where’ clause in “all the tables”; whereas an Outer Join is a... |
Vector vs ArrayList
 Vector and ArrayList are both classes from java collection package. Vector is used to implement a dynamic array which grows automatically as per need basis. Like Vector, ArrayList is also an implementation of... |
Virtual vs Abstract Method
 Abstract methods are the methods that are declared but do not have any implementations. Virtual methods are used for an implementation of the type-based polymorphism. The derived class has the flexibility of... |
Verification vs Validation
 In the process of verification, the various product related items like documents, plans, code, etc. are evaluated. In Validation, the product itself is tested. This completely ensures the desired functionality... |
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