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Microsoft Technology

Throw Vs Throw ex Posted: 29 Jun 2010 08:41 AM PDT Throw Throw Ex try    {          // do some operation that can fail    }     catch  (Exception ex)    {         // do some local cleanup          throw ;    } try    {          // do some operation that can fail    }     catch  (Exception ex)    {         // do some local cleanup          throw  ex;    } It preserve the Stack information with Exception It Won't Send Stack information with Exception This is called as "Rethrow" This is called as "Breaking the Sta...
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Design Patterns

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There are three basic classifications of patterns Creational, Structural, and Behavioral patterns. Creational Patterns • Abstract Factory :- Creates an instance of several families of classes • Builder : - Separates object construction from its representation • Factory Method :- Creates an instance of several derived classes • Prototype :- A fully initialized instance to be copied or cloned • Singleton :- A class in which only a single instance can exist Note : - The best way to remember Creational pattern is by remembering ABFPS (Abraham Became First President of States). Structural Patterns • Adapter :-Match interfaces of different classes . • Bridge :-Separates an object’s abstraction from its implementation. • Composite :-A tree structure of simple and composite objects. • Decorator :-Add responsibilities to objects dynamically. • Façade :-A single class that represents an entire subsystem. • Flyweight :-A fine-grained instance used for efficient sharing...
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RDBMS Vs OODBMS

An Object-Oriented Database Management System (OODBMS), sometimes referred as Object Database Management System (ODMS) is a Database Management System (DBMS) that supports modeling and creation of data as objects. OODBMS provides support for object classes, class property and method inheritance by sub classes and their objects. A Relational Database Management System (RDBMS) is also a DBMS but, that is based on the relational model. Most popular DBMSs currently in use are RDMSs. As mentioned earlier RDBMS is based on the relational model and data in a RDMS are stored in the form of related tables. So, a relational database can simply be seen as a collection of one or more relations or tables with columns and rows. Each column corresponds to an attribute of the relation and each row corresponds to a record that consists of data values for an entity. RDMSs are developed by extending hierarchical and the network models, which were two previous database systems. Main elements of a RD...
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